220812013 has 2 divisors, whose sum is σ = 220812014. Its totient is φ = 220812012.

The previous prime is 220812001. The next prime is 220812017. The reversal of 220812013 is 310218022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137874564 + 82937449 = 11742^2 + 9107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220812013 is a prime.

It is a super-2 number, since 2×220812013² = 97515890170224338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220812017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110406006 + 110406007.

It is an arithmetic number, because the mean of its divisors is an integer number (110406007).

Almost surely, 2^220812013 is an apocalyptic number.

It is an amenable number.

220812013 is a deficient number, since it is larger than the sum of its proper divisors (1).

220812013 is an equidigital number, since it uses as much as digits as its factorization.

220812013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 220812013 is about 14859.7447151692. The cubic root of 220812013 is about 604.4228843055.

The spelling of 220812013 in words is "two hundred twenty million, eight hundred twelve thousand, thirteen".