22121201212010 has 16 divisors (see below), whose sum is σ = 39819582178272. Its totient is φ = 8848164930000.

The previous prime is 22121201211929. The next prime is 22121201212049. The reversal of 22121201212010 is 1021210212122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121201212010.

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, 39149816 + ... + 39710835.

It is an arithmetic number, because the mean of its divisors is an integer number (2488723886142).

Almost surely, 2^{22121201212010} is an apocalyptic number.

22121201212010 is a deficient number, since it is larger than the sum of its proper divisors (17698380966262).

22121201212010 is a wasteful number, since it uses less digits than its factorization.

22121201212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78888709.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121201212010 its reverse (1021210212122), we get a palindrome (23142411424132).

The spelling of 22121201212010 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred one million, two hundred twelve thousand, ten".