102001001211999 has 24 divisors (see below), whose sum is σ = 147518283494400. Its totient is φ = 67915979772480.

The previous prime is 102001001211979. The next prime is 102001001212007. The reversal of 102001001211999 is 999112100100201.

It is not a de Polignac number, because 102001001211999 - 2²⁰ = 102001000163423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001001211919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200289909 + ... + 200798529.

It is an arithmetic number, because the mean of its divisors is an integer number (6146595145600).

Almost surely, 2^{102001001211999} is an apocalyptic number.

102001001211999 is a deficient number, since it is larger than the sum of its proper divisors (45517282282401).

102001001211999 is a wasteful number, since it uses less digits than its factorization.

102001001211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536335 (or 536332 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 102001001211999 in words is "one hundred two trillion, one billion, one million, two hundred eleven thousand, nine hundred ninety-nine".