21000112100102 has 8 divisors (see below), whose sum is σ = 31943832490512. Its totient is φ = 10352167936600.

The previous prime is 21000112100027. The next prime is 21000112100131. The reversal of 21000112100102 is 20100121100012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73944056549 + ... + 73944056832.

It is an arithmetic number, because the mean of its divisors is an integer number (3992979061314).

Almost surely, 2^{21000112100102} is an apocalyptic number.

21000112100102 is a deficient number, since it is larger than the sum of its proper divisors (10943720390410).

21000112100102 is a wasteful number, since it uses less digits than its factorization.

21000112100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147888113454.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21000112100102 its reverse (20100121100012), we get a palindrome (41100233200114).

The spelling of 21000112100102 in words is "twenty-one trillion, one hundred twelve million, one hundred thousand, one hundred two".