21001012100110 has 32 divisors (see below), whose sum is σ = 43722589059072. Its totient is φ = 7113595835040.

The previous prime is 21001012100087. The next prime is 21001012100143. The reversal of 21001012100110 is 1100121010012.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 1807310206 + ... + 1807321825.

It is an arithmetic number, because the mean of its divisors is an integer number (1366330908096).

Almost surely, 2^{21001012100110} is an apocalyptic number.

21001012100110 is an abundant number, since it is smaller than the sum of its proper divisors (22721576958962).

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

21001012100110 is a wasteful number, since it uses less digits than its factorization.

21001012100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614632128.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21001012100110 its reverse (1100121010012), we get a palindrome (22101133110122).

The spelling of 21001012100110 in words is "twenty-one trillion, one billion, twelve million, one hundred thousand, one hundred ten".