22121102121200 has 60 divisors (see below), whose sum is σ = 53158105250568. Its totient is φ = 8846416723200.

The previous prime is 22121102121197. The next prime is 22121102121229. The reversal of 22121102121200 is 212120112122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4574006 + ... + 8072405.

Almost surely, 2^{22121102121200} is an apocalyptic number.

22121102121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121102121200 is an abundant number, since it is smaller than the sum of its proper divisors (31037003129368).

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

22121102121200 is a wasteful number, since it uses less digits than its factorization.

22121102121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12650802 (or 12650791 counting only the distinct ones).

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

Adding to 22121102121200 its reverse (212120112122), we get a palindrome (22333222233322).

The spelling of 22121102121200 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty-one thousand, two hundred".