101372721 has 8 divisors (see below), whose sum is σ = 136874880. Its totient is φ = 66726192.

The previous prime is 101372701. The next prime is 101372723. The reversal of 101372721 is 127273101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101372721 - 2⁹ = 101372209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101372691 and 101372700.

It is not an unprimeable number, because it can be changed into a prime (101372723) 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, 213630 + ... + 214103.

It is an arithmetic number, because the mean of its divisors is an integer number (17109360).

Almost surely, 2^101372721 is an apocalyptic number.

It is an amenable number.

101372721 is a deficient number, since it is larger than the sum of its proper divisors (35502159).

101372721 is an equidigital number, since it uses as much as digits as its factorization.

101372721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427815.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 101372721 is about 10068.4021075839. The cubic root of 101372721 is about 466.2731073608.

It can be divided in two parts, 10 and 1372721, that added together give a palindrome (1372731).

The spelling of 101372721 in words is "one hundred one million, three hundred seventy-two thousand, seven hundred twenty-one".