20100111211102 has 32 divisors (see below), whose sum is σ = 36188816580000. Its totient is φ = 8271729497088.

The previous prime is 20100111211091. The next prime is 20100111211139. The reversal of 20100111211102 is 20111211100102.

It is a happy number.

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

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, 1196711727 + ... + 1196728522.

It is an arithmetic number, because the mean of its divisors is an integer number (1130900518125).

Almost surely, 2^{20100111211102} is an apocalyptic number.

20100111211102 is a deficient number, since it is larger than the sum of its proper divisors (16088705368898).

20100111211102 is a wasteful number, since it uses less digits than its factorization.

20100111211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393440300.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20100111211102 its reverse (20111211100102), we get a palindrome (40211322311204).

The spelling of 20100111211102 in words is "twenty trillion, one hundred billion, one hundred eleven million, two hundred eleven thousand, one hundred two".