102001021199 has 32 divisors (see below), whose sum is σ = 128972722176. Its totient is φ = 78355710720.

The previous prime is 102001021141. The next prime is 102001021249. The reversal of 102001021199 is 991120100201.

It is a de Polignac number, because none of the positive numbers 2^k-102001021199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001021099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23195669 + ... + 23200065.

It is an arithmetic number, because the mean of its divisors is an integer number (4030397568).

Almost surely, 2^102001021199 is an apocalyptic number.

102001021199 is a deficient number, since it is larger than the sum of its proper divisors (26971700977).

102001021199 is a wasteful number, since it uses less digits than its factorization.

102001021199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8615.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 102001021199 in words is "one hundred two billion, one million, twenty-one thousand, one hundred ninety-nine".