21100120232102 has 32 divisors (see below), whose sum is σ = 32707219184640. Its totient is φ = 10202617434240.

The previous prime is 21100120232083. The next prime is 21100120232123. The reversal of 21100120232102 is 20123202100112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44399102 + ... + 44871822.

It is an arithmetic number, because the mean of its divisors is an integer number (1022100599520).

Almost surely, 2^{21100120232102} is an apocalyptic number.

21100120232102 is a deficient number, since it is larger than the sum of its proper divisors (11607098952538).

21100120232102 is a wasteful number, since it uses less digits than its factorization.

21100120232102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477908.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21100120232102 its reverse (20123202100112), we get a palindrome (41223322332214).

The spelling of 21100120232102 in words is "twenty-one trillion, one hundred billion, one hundred twenty million, two hundred thirty-two thousand, one hundred two".