21101002210112 has 56 divisors (see below), whose sum is σ = 45679659000672. Its totient is φ = 9591199833600.

The previous prime is 21101002210111. The next prime is 21101002210177. The reversal of 21101002210112 is 21101220010112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101002210111) 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, 46861562 + ... + 47309702.

Almost surely, 2^{21101002210112} is an apocalyptic number.

21101002210112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21101002210112 is an abundant number, since it is smaller than the sum of its proper divisors (24578656790560).

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

21101002210112 is a wasteful number, since it uses less digits than its factorization.

21101002210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515047 (or 515037 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21101002210112 its reverse (21101220010112), we get a palindrome (42202222220224).

The spelling of 21101002210112 in words is "twenty-one trillion, one hundred one billion, two million, two hundred ten thousand, one hundred twelve".