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2220210021 = 3196728677
BaseRepresentation
bin1000010001010101…
…1011011101100101
312201201201100120210
42010111123131211
514021333210041
61004150450033
7106006321341
oct20425333545
95651640523
102220210021
11a3a283717
1251b663919
13294c89553
14170c1c621
15cedb0016
hex8455b765

2220210021 has 24 divisors (see below), whose sum is σ = 3163651680. Its totient is φ = 1381149792.

The previous prime is 2220210007. The next prime is 2220210023. The reversal of 2220210021 is 1200120222.

2220210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2220210021 - 210 = 2220208997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220209979 and 2220210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220210023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251535 + ... + 260211.

It is an arithmetic number, because the mean of its divisors is an integer number (131818820).

Almost surely, 22220210021 is an apocalyptic number.

It is an amenable number.

2220210021 is a deficient number, since it is larger than the sum of its proper divisors (943441659).

2220210021 is an equidigital number, since it uses as much as digits as its factorization.

2220210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833 (or 8766 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2220210021 is about 47119.1046285899. The cubic root of 2220210021 is about 1304.5618863738.

Adding to 2220210021 its reverse (1200120222), we get a palindrome (3420330243).

It can be divided in two parts, 22202 and 10021, that added together give a palindrome (32223).

The spelling of 2220210021 in words is "two billion, two hundred twenty million, two hundred ten thousand, twenty-one".

Divisors: 1 3 19 57 67 201 1273 3819 4489 8677 13467 26031 85291 164863 255873 494589 581359 1744077 11045821 33137463 38951053 116853159 740070007 2220210021