21302033313 has 16 divisors (see below), whose sum is σ = 30994129152. Its totient is φ = 12906426000.

The previous prime is 21302033309. The next prime is 21302033351. The reversal of 21302033313 is 31333020312.

It is not a de Polignac number, because 21302033313 - 2² = 21302033309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21302033313.

It is not an unprimeable number, because it can be changed into a prime (21302031313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15498 + ... + 206988.

It is an arithmetic number, because the mean of its divisors is an integer number (1937133072).

Almost surely, 2^21302033313 is an apocalyptic number.

It is an amenable number.

21302033313 is a deficient number, since it is larger than the sum of its proper divisors (9692095839).

21302033313 is a wasteful number, since it uses less digits than its factorization.

21302033313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194876.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21302033313 its reverse (31333020312), we get a palindrome (52635053625).

The spelling of 21302033313 in words is "twenty-one billion, three hundred two million, thirty-three thousand, three hundred thirteen".