21122100110200 has 48 divisors (see below), whose sum is σ = 49119839309880. Its totient is φ = 8446955045760.

The previous prime is 21122100110191. The next prime is 21122100110203. The reversal of 21122100110200 is 201100122112.

It is a super-2 number, since 2×21122100110200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122100110203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10882399 + ... + 12675598.

Almost surely, 2^{21122100110200} is an apocalyptic number.

21122100110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122100110200 is an abundant number, since it is smaller than the sum of its proper divisors (27997739199680).

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

21122100110200 is a wasteful number, since it uses less digits than its factorization.

21122100110200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23562496 (or 23562487 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21122100110200 its reverse (201100122112), we get a palindrome (21323200232312).

The spelling of 21122100110200 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred million, one hundred ten thousand, two hundred".