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2122212101 = 10130768443
BaseRepresentation
bin111111001111110…
…0110001100000101
312110220022112201012
41332133212030011
513321241241401
6550330212005
7103406335202
oct17637461405
95426275635
102122212101
11999a2a3a9
124b2884005
1327a897109
14161bccca9
15c64a38bb
hex7e7e6305

2122212101 has 8 divisors (see below), whose sum is σ = 2150236704. Its totient is φ = 2094325200.

The previous prime is 2122212091. The next prime is 2122212133. The reversal of 2122212101 is 1012122212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2122212101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122212151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3215 + ... + 65228.

It is an arithmetic number, because the mean of its divisors is an integer number (268779588).

Almost surely, 22122212101 is an apocalyptic number.

It is an amenable number.

2122212101 is a deficient number, since it is larger than the sum of its proper divisors (28024603).

2122212101 is a wasteful number, since it uses less digits than its factorization.

2122212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68851.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2122212101 is about 46067.4733515959. The cubic root of 2122212101 is about 1285.0783160694.

Adding to 2122212101 its reverse (1012122212), we get a palindrome (3134334313).

It can be divided in two parts, 2122212 and 101, that multiplied together give a palindrome (214343412).

The spelling of 2122212101 in words is "two billion, one hundred twenty-two million, two hundred twelve thousand, one hundred one".

Divisors: 1 101 307 31007 68443 6912743 21012001 2122212101