22121002001012 has 12 divisors (see below), whose sum is σ = 38794648052160. Its totient is φ = 11036816843256.

The previous prime is 22121002000987. The next prime is 22121002001017. The reversal of 22121002001012 is 21010020012122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121002001017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5921037212 + ... + 5921040947.

It is an arithmetic number, because the mean of its divisors is an integer number (3232887337680).

Almost surely, 2^{22121002001012} is an apocalyptic number.

It is an amenable number.

22121002001012 is a deficient number, since it is larger than the sum of its proper divisors (16673646051148).

22121002001012 is a wasteful number, since it uses less digits than its factorization.

22121002001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11842078630 (or 11842078628 counting only the distinct ones).

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

Adding to 22121002001012 its reverse (21010020012122), we get a palindrome (43131022013134).

The spelling of 22121002001012 in words is "twenty-two trillion, one hundred twenty-one billion, two million, one thousand, twelve".