22121111000212 has 24 divisors (see below), whose sum is σ = 44244828653760. Its totient is φ = 9479917574400.

The previous prime is 22121111000201. The next prime is 22121111000269. The reversal of 22121111000212 is 21200011112122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22789789 + ... + 23740612.

It is an arithmetic number, because the mean of its divisors is an integer number (1843534527240).

Almost surely, 2^{22121111000212} is an apocalyptic number.

It is an amenable number.

22121111000212 is an abundant number, since it is smaller than the sum of its proper divisors (22123717653548).

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

22121111000212 is a wasteful number, since it uses less digits than its factorization.

22121111000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46547391 (or 46547389 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22121111000212 its reverse (21200011112122), we get a palindrome (43321122112334).

The spelling of 22121111000212 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twelve", and thus it is an aban number.