101199988 has 6 divisors (see below), whose sum is σ = 177099986. Its totient is φ = 50599992.

The previous prime is 101199979. The next prime is 101200007. The reversal of 101199988 is 889991101.

It can be written as a sum of positive squares in only one way, i.e., 62536464 + 38663524 = 7908^2 + 6218^2 .

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, 12649995 + ... + 12650002.

Almost surely, 2^101199988 is an apocalyptic number.

It is an amenable number.

101199988 is a deficient number, since it is larger than the sum of its proper divisors (75899998).

101199988 is a wasteful number, since it uses less digits than its factorization.

101199988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25300001 (or 25299999 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 46.

The square root of 101199988 is about 10059.8204755353. The cubic root of 101199988 is about 466.0081230509.

The spelling of 101199988 in words is "one hundred one million, one hundred ninety-nine thousand, nine hundred eighty-eight".