21210011022112 has 48 divisors (see below), whose sum is σ = 45565771557600. Its totient is φ = 9638278666240.

The previous prime is 21210011022091. The next prime is 21210011022127. The reversal of 21210011022112 is 21122011001212.

It is a super-2 number, since 2×21210011022112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6945937 + ... + 9521872.

It is an arithmetic number, because the mean of its divisors is an integer number (949286907450).

Almost surely, 2^{21210011022112} is an apocalyptic number.

21210011022112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21210011022112 is an abundant number, since it is smaller than the sum of its proper divisors (24355760535488).

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

21210011022112 is a wasteful number, since it uses less digits than its factorization.

21210011022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16471489 (or 16471481 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210011022112 its reverse (21122011001212), we get a palindrome (42332022023324).

The spelling of 21210011022112 in words is "twenty-one trillion, two hundred ten billion, eleven million, twenty-two thousand, one hundred twelve".