213301131013021 has 4 divisors (see below), whose sum is σ = 215500111745212. Its totient is φ = 211102150280832.

The previous prime is 213301131013013. The next prime is 213301131013049. The reversal of 213301131013021 is 120310131103312.

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 56257275235225 + 157043855777796 = 7500485^2 + 12531714^2 .

It is a cyclic number.

It is not a de Polignac number, because 213301131013021 - 2³ = 213301131013013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213301131012983 and 213301131013001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213301131013081) 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, 1099490365950 + ... + 1099490366143.

It is an arithmetic number, because the mean of its divisors is an integer number (53875027936303).

Almost surely, 2^{213301131013021} is an apocalyptic number.

It is an amenable number.

213301131013021 is a deficient number, since it is larger than the sum of its proper divisors (2198980732191).

213301131013021 is an equidigital number, since it uses as much as digits as its factorization.

213301131013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198980732190.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 213301131013021 its reverse (120310131103312), we get a palindrome (333611262116333).

The spelling of 213301131013021 in words is "two hundred thirteen trillion, three hundred one billion, one hundred thirty-one million, thirteen thousand, twenty-one".