22131123121210 has 32 divisors (see below), whose sum is σ = 39863859931584. Its totient is φ = 8846264880000.

The previous prime is 22131123121187. The next prime is 22131123121249. The reversal of 22131123121210 is 1212132113122.

It is a happy number.

It is a super-2 number, since 2×22131123121210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94520785 + ... + 94754635.

It is an arithmetic number, because the mean of its divisors is an integer number (1245745622862).

Almost surely, 2^{22131123121210} is an apocalyptic number.

22131123121210 is a deficient number, since it is larger than the sum of its proper divisors (17732736810374).

22131123121210 is a wasteful number, since it uses less digits than its factorization.

22131123121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240430.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 22131123121210 its reverse (1212132113122), we get a palindrome (23343255234332).

The spelling of 22131123121210 in words is "twenty-two trillion, one hundred thirty-one billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred ten".