102201993998 has 16 divisors (see below), whose sum is σ = 169557571680. Its totient is φ = 45895281696.

The previous prime is 102201993997. The next prime is 102201994019. The reversal of 102201993998 is 899399102201.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201993997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53118578 + ... + 53120501.

It is an arithmetic number, because the mean of its divisors is an integer number (10597348230).

Almost surely, 2^102201993998 is an apocalyptic number.

102201993998 is a deficient number, since it is larger than the sum of its proper divisors (67355577682).

102201993998 is a wasteful number, since it uses less digits than its factorization.

102201993998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106239131.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 102201993998 in words is "one hundred two billion, two hundred one million, nine hundred ninety-three thousand, nine hundred ninety-eight".