101393621 has 4 divisors (see below), whose sum is σ = 115878432. Its totient is φ = 86908812.

The previous prime is 101393587. The next prime is 101393623. The reversal of 101393621 is 126393101.

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 a de Polignac number, because none of the positive numbers 2^k-101393621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101393623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7242395 + ... + 7242408.

It is an arithmetic number, because the mean of its divisors is an integer number (28969608).

Almost surely, 2^101393621 is an apocalyptic number.

It is an amenable number.

101393621 is a deficient number, since it is larger than the sum of its proper divisors (14484811).

101393621 is an equidigital number, since it uses as much as digits as its factorization.

101393621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14484810.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 101393621 is about 10069.4399546350. The cubic root of 101393621 is about 466.3051489798.

The spelling of 101393621 in words is "one hundred one million, three hundred ninety-three thousand, six hundred twenty-one".