101313021 has 4 divisors (see below), whose sum is σ = 135084032. Its totient is φ = 67542012.

The previous prime is 101313019. The next prime is 101313029. The reversal of 101313021 is 120313101.

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 not a de Polignac number, because 101313021 - 2¹ = 101313019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101312988 and 101313006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101313029) 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, 16885501 + ... + 16885506.

It is an arithmetic number, because the mean of its divisors is an integer number (33771008).

Almost surely, 2^101313021 is an apocalyptic number.

It is an amenable number.

101313021 is a deficient number, since it is larger than the sum of its proper divisors (33771011).

101313021 is an equidigital number, since it uses as much as digits as its factorization.

101313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33771010.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 101313021 is about 10065.4369502769. The cubic root of 101313021 is about 466.1815575156.

Adding to 101313021 its reverse (120313101), we get a palindrome (221626122).

The spelling of 101313021 in words is "one hundred one million, three hundred thirteen thousand, twenty-one".