21120102001102 has 24 divisors (see below), whose sum is σ = 34426624758480. Its totient is φ = 9713049877440.

The previous prime is 21120102001099. The next prime is 21120102001127. The reversal of 21120102001102 is 20110020102112.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111089202 + ... + 111279157.

It is an arithmetic number, because the mean of its divisors is an integer number (1434442698270).

Almost surely, 2^{21120102001102} is an apocalyptic number.

21120102001102 is a deficient number, since it is larger than the sum of its proper divisors (13306522757378).

21120102001102 is a wasteful number, since it uses less digits than its factorization.

21120102001102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222368668 (or 222368655 counting only the distinct ones).

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

Adding to 21120102001102 its reverse (20110020102112), we get a palindrome (41230122103214).

The spelling of 21120102001102 in words is "twenty-one trillion, one hundred twenty billion, one hundred two million, one thousand, one hundred two".