21102200121112 has 32 divisors (see below), whose sum is σ = 44216361680400. Its totient is φ = 9357960140800.

The previous prime is 21102200121061. The next prime is 21102200121113. The reversal of 21102200121112 is 21112100220112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102200121113) 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, 2924358937 + ... + 2924366152.

Almost surely, 2^{21102200121112} is an apocalyptic number.

21102200121112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21102200121112 is an abundant number, since it is smaller than the sum of its proper divisors (23114161559288).

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

21102200121112 is a wasteful number, since it uses less digits than its factorization.

21102200121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848725147 (or 5848725143 counting only the distinct ones).

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

Adding to 21102200121112 its reverse (21112100220112), we get a palindrome (42214300341224).

The spelling of 21102200121112 in words is "twenty-one trillion, one hundred two billion, two hundred million, one hundred twenty-one thousand, one hundred twelve".