213313123021 has 8 divisors (see below), whose sum is σ = 213723619200. Its totient is φ = 212902930800.

The previous prime is 213313122983. The next prime is 213313123033. The reversal of 213313123021 is 120321313312.

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

It is a cyclic number.

It is not a de Polignac number, because 213313123021 - 2¹⁵ = 213313090253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213313122983 and 213313123001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213313120021) 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, 1354720 + ... + 1503958.

It is an arithmetic number, because the mean of its divisors is an integer number (26715452400).

Almost surely, 2^213313123021 is an apocalyptic number.

It is an amenable number.

213313123021 is a deficient number, since it is larger than the sum of its proper divisors (410496179).

213313123021 is a wasteful number, since it uses less digits than its factorization.

213313123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151979.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 213313123021 its reverse (120321313312), we get a palindrome (333634436333).

The spelling of 213313123021 in words is "two hundred thirteen billion, three hundred thirteen million, one hundred twenty-three thousand, twenty-one".