21022102122112 has 192 divisors, whose sum is σ = 52584616022400. Its totient is φ = 8297477830656.

The previous prime is 21022102122107. The next prime is 21022102122127. The reversal of 21022102122112 is 21122120122012.

It is a self number, because there is not a number n which added to its sum of digits gives 21022102122112.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35500653 + ... + 36087955.

It is an arithmetic number, because the mean of its divisors is an integer number (273878208450).

Almost surely, 2^{21022102122112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21022102122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26292308011200).

21022102122112 is an abundant number, since it is smaller than the sum of its proper divisors (31562513900288).

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

21022102122112 is a wasteful number, since it uses less digits than its factorization.

21022102122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587783 (or 587764 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21022102122112 its reverse (21122120122012), we get a palindrome (42144222244124).

The spelling of 21022102122112 in words is "twenty-one trillion, twenty-two billion, one hundred two million, one hundred twenty-two thousand, one hundred twelve".