21122202012000 has 96 divisors (see below), whose sum is σ = 69196333830624. Its totient is φ = 5632587200000.

The previous prime is 21122202011971. The next prime is 21122202012011. The reversal of 21122202012000 is 21020222112.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×21122202012000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 880079751 + ... + 880103750.

It is an arithmetic number, because the mean of its divisors is an integer number (720795144069).

Almost surely, 2^{21122202012000} is an apocalyptic number.

21122202012000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122202012000 is an abundant number, since it is smaller than the sum of its proper divisors (48074131818624).

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

21122202012000 is a wasteful number, since it uses less digits than its factorization.

21122202012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760183529 (or 1760183511 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21122202012000 its reverse (21020222112), we get a palindrome (21143222234112).

The spelling of 21122202012000 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred two million, twelve thousand".