21100213122110 has 8 divisors (see below), whose sum is σ = 37980383619816. Its totient is φ = 8440085248840.

The previous prime is 21100213122091. The next prime is 21100213122139. The reversal of 21100213122110 is 1122131200112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055010656096 + ... + 1055010656115.

It is an arithmetic number, because the mean of its divisors is an integer number (4747547952477).

Almost surely, 2^{21100213122110} is an apocalyptic number.

21100213122110 is a deficient number, since it is larger than the sum of its proper divisors (16880170497706).

21100213122110 is a wasteful number, since it uses less digits than its factorization.

21100213122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110021312218.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21100213122110 its reverse (1122131200112), we get a palindrome (22222344322222).

The spelling of 21100213122110 in words is "twenty-one trillion, one hundred billion, two hundred thirteen million, one hundred twenty-two thousand, one hundred ten".