101666502022 has 4 divisors (see below), whose sum is σ = 152499753036. Its totient is φ = 50833251010.

The previous prime is 101666502019. The next prime is 101666502059. The reversal of 101666502022 is 220205666101.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25416625504 + ... + 25416625507.

It is an arithmetic number, because the mean of its divisors is an integer number (38124938259).

Almost surely, 2^101666502022 is an apocalyptic number.

101666502022 is a deficient number, since it is larger than the sum of its proper divisors (50833251014).

101666502022 is an equidigital number, since it uses as much as digits as its factorization.

101666502022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50833251013.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 101666502022 in words is "one hundred one billion, six hundred sixty-six million, five hundred two thousand, twenty-two".