21012000112102 has 32 divisors (see below), whose sum is σ = 32055761697120. Its totient is φ = 10327758059520.

The previous prime is 21012000112067. The next prime is 21012000112109. The reversal of 21012000112102 is 20121100021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012000112109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53219902 + ... + 53613262.

It is an arithmetic number, because the mean of its divisors is an integer number (1001742553035).

Almost surely, 2^{21012000112102} is an apocalyptic number.

21012000112102 is a deficient number, since it is larger than the sum of its proper divisors (11043761585018).

21012000112102 is a wasteful number, since it uses less digits than its factorization.

21012000112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394648.

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

Adding to 21012000112102 its reverse (20121100021012), we get a palindrome (41133100133114).

The spelling of 21012000112102 in words is "twenty-one trillion, twelve billion, one hundred twelve thousand, one hundred two".