21100022101210 has 32 divisors (see below), whose sum is σ = 42679910931840. Its totient is φ = 7452047938368.

The previous prime is 21100022101183. The next prime is 21100022101229. The reversal of 21100022101210 is 1210122000112.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528428800 + ... + 3528434779.

It is an arithmetic number, because the mean of its divisors is an integer number (1333747216620).

Almost surely, 2^{21100022101210} is an apocalyptic number.

21100022101210 is an abundant number, since it is smaller than the sum of its proper divisors (21579888830630).

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

21100022101210 is a wasteful number, since it uses less digits than its factorization.

21100022101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7056863622.

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

Adding to 21100022101210 its reverse (1210122000112), we get a palindrome (22310144101322).

The spelling of 21100022101210 in words is "twenty-one trillion, one hundred billion, twenty-two million, one hundred one thousand, two hundred ten".