20302212213 has 6 divisors (see below), whose sum is σ = 29325417654. Its totient is φ = 13534808136.

The previous prime is 20302212199. The next prime is 20302212223. The reversal of 20302212213 is 31221220302.

It can be written as a sum of positive squares in only one way, i.e., 13595093604 + 6707118609 = 116598^2 + 81897^2 .

It is not a de Polignac number, because 20302212213 - 2⁸ = 20302211957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302212223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127900670 + ... + 1127900687.

It is an arithmetic number, because the mean of its divisors is an integer number (4887569609).

Almost surely, 2^20302212213 is an apocalyptic number.

It is an amenable number.

20302212213 is a deficient number, since it is larger than the sum of its proper divisors (9023205441).

20302212213 is a wasteful number, since it uses less digits than its factorization.

20302212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255801363 (or 2255801360 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20302212213 its reverse (31221220302), we get a palindrome (51523432515).

The spelling of 20302212213 in words is "twenty billion, three hundred two million, two hundred twelve thousand, two hundred thirteen".