21211200100110 has 32 divisors (see below), whose sum is σ = 50910221464992. Its totient is φ = 5655948779520.

The previous prime is 21211200100093. The next prime is 21211200100127. The reversal of 21211200100110 is 1100100211212.

It is an interprime number because it is at equal distance from previous prime (21211200100093) and next prime (21211200100127).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22738099 + ... + 23652558.

It is an arithmetic number, because the mean of its divisors is an integer number (1590944420781).

Almost surely, 2^{21211200100110} is an apocalyptic number.

21211200100110 is an abundant number, since it is smaller than the sum of its proper divisors (29699021364882).

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

21211200100110 is a wasteful number, since it uses less digits than its factorization.

21211200100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46405908.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21211200100110 its reverse (1100100211212), we get a palindrome (22311300311322).

The spelling of 21211200100110 in words is "twenty-one trillion, two hundred eleven billion, two hundred million, one hundred thousand, one hundred ten".