21112102001102 has 32 divisors (see below), whose sum is σ = 38322179474688. Its totient is φ = 8515571815296.

The previous prime is 21112102001099. The next prime is 21112102001129. The reversal of 21112102001102 is 20110020121112.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 7592933 + ... + 9993839.

It is an arithmetic number, because the mean of its divisors is an integer number (1197568108584).

Almost surely, 2^{21112102001102} is an apocalyptic number.

21112102001102 is a deficient number, since it is larger than the sum of its proper divisors (17210077473586).

21112102001102 is a wasteful number, since it uses less digits than its factorization.

21112102001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437880.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21112102001102 its reverse (20110020121112), we get a palindrome (41222122122214).

The spelling of 21112102001102 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, one thousand, one hundred two".