102111200002021 has 16 divisors (see below), whose sum is σ = 119404531699200. Its totient is φ = 85512574570608.

The previous prime is 102111200002001. The next prime is 102111200002037. The reversal of 102111200002021 is 120200002111201.

It is a cyclic number.

It is not a de Polignac number, because 102111200002021 - 2⁵ = 102111200001989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111200001992 and 102111200002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111200002001) 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, 758345611 + ... + 758480248.

It is an arithmetic number, because the mean of its divisors is an integer number (7462783231200).

Almost surely, 2^{102111200002021} is an apocalyptic number.

It is an amenable number.

102111200002021 is a deficient number, since it is larger than the sum of its proper divisors (17293331697179).

102111200002021 is a wasteful number, since it uses less digits than its factorization.

102111200002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516826088.

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

Adding to 102111200002021 its reverse (120200002111201), we get a palindrome (222311202113222).

The spelling of 102111200002021 in words is "one hundred two trillion, one hundred eleven billion, two hundred million, two thousand, twenty-one".