101637121 has 4 divisors (see below), whose sum is σ = 101779200. Its totient is φ = 101495044.

The previous prime is 101637103. The next prime is 101637143. The reversal of 101637121 is 121736101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101637121 - 2⁵ = 101637089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101637092 and 101637101.

It is not an unprimeable number, because it can be changed into a prime (101637181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69961 + ... + 71398.

It is an arithmetic number, because the mean of its divisors is an integer number (25444800).

Almost surely, 2^101637121 is an apocalyptic number.

It is an amenable number.

101637121 is a deficient number, since it is larger than the sum of its proper divisors (142079).

101637121 is an equidigital number, since it uses as much as digits as its factorization.

101637121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142078.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 101637121 is about 10081.5237439585. The cubic root of 101637121 is about 466.6781327682.

The spelling of 101637121 in words is "one hundred one million, six hundred thirty-seven thousand, one hundred twenty-one".