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2130220212 = 223177518351
BaseRepresentation
bin111111011111000…
…1001010010110100
312111110101101202220
41332332021102310
513330314021322
6551214002340
7103534400361
oct17676112264
95443341686
102130220212
119a34a9a7a
124b54a63b0
1327c43c143
14162cb5468
15c703655c
hex7ef894b4

2130220212 has 12 divisors (see below), whose sum is σ = 4970513856. Its totient is φ = 710073400.

The previous prime is 2130220181. The next prime is 2130220217. The reversal of 2130220212 is 2120220312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21302202122 = 9075676303226649888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2130220191 and 2130220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130220217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88759164 + ... + 88759187.

It is an arithmetic number, because the mean of its divisors is an integer number (414209488).

Almost surely, 22130220212 is an apocalyptic number.

It is an amenable number.

2130220212 is an abundant number, since it is smaller than the sum of its proper divisors (2840293644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2130220212 is a wasteful number, since it uses less digits than its factorization.

2130220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177518358 (or 177518356 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2130220212 is about 46154.3087046053. The cubic root of 2130220212 is about 1286.6926901350.

Adding to 2130220212 its reverse (2120220312), we get a palindrome (4250440524).

It can be divided in two parts, 21302 and 20212, that added together give a palindrome (41514).

The spelling of 2130220212 in words is "two billion, one hundred thirty million, two hundred twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 177518351 355036702 532555053 710073404 1065110106 2130220212