113213003021 has 4 divisors (see below), whose sum is σ = 119872591452. Its totient is φ = 106553414592.

The previous prime is 113213003003. The next prime is 113213003023. The reversal of 113213003021 is 120300312311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60777040900 + 52435962121 = 246530^2 + 228989^2 .

It is a cyclic number.

It is not a de Polignac number, because 113213003021 - 2²² = 113208808717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6659588413 = 113213003021 / (1 + 1 + 3 + 2 + 1 + 3 + 0 + 0 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113213003023) 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, 3329794190 + ... + 3329794223.

It is an arithmetic number, because the mean of its divisors is an integer number (29968147863).

Almost surely, 2^113213003021 is an apocalyptic number.

It is an amenable number.

113213003021 is a deficient number, since it is larger than the sum of its proper divisors (6659588431).

113213003021 is an equidigital number, since it uses as much as digits as its factorization.

113213003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6659588430.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 113213003021 its reverse (120300312311), we get a palindrome (233513315332).

The spelling of 113213003021 in words is "one hundred thirteen billion, two hundred thirteen million, three thousand, twenty-one".