22121012042412 has 24 divisors (see below), whose sum is σ = 52126741251312. Its totient is φ = 7300664040000.

The previous prime is 22121012042411. The next prime is 22121012042431. The reversal of 22121012042412 is 21424021012122.

It is not an unprimeable number, because it can be changed into a prime (22121012042411) 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, 9125828839 + ... + 9125831262.

It is an arithmetic number, because the mean of its divisors is an integer number (2171947552138).

Almost surely, 2^{22121012042412} is an apocalyptic number.

It is an amenable number.

22121012042412 is an abundant number, since it is smaller than the sum of its proper divisors (30005729208900).

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

22121012042412 is a wasteful number, since it uses less digits than its factorization.

22121012042412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18251660209 (or 18251660207 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 22121012042412 its reverse (21424021012122), we get a palindrome (43545033054534).

The spelling of 22121012042412 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, forty-two thousand, four hundred twelve".