220888915813 has 2 divisors, whose sum is σ = 220888915814. Its totient is φ = 220888915812.

The previous prime is 220888915799. The next prime is 220888915817. The reversal of 220888915813 is 318519888022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141329379844 + 79559535969 = 375938^2 + 282063^2 .

It is a cyclic number.

It is not a de Polignac number, because 220888915813 - 2¹³ = 220888907621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220888915817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110444457906 + 110444457907.

It is an arithmetic number, because the mean of its divisors is an integer number (110444457907).

Almost surely, 2^220888915813 is an apocalyptic number.

It is an amenable number.

220888915813 is a deficient number, since it is larger than the sum of its proper divisors (1).

220888915813 is an equidigital number, since it uses as much as digits as its factorization.

220888915813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 55.

The spelling of 220888915813 in words is "two hundred twenty billion, eight hundred eighty-eight million, nine hundred fifteen thousand, eight hundred thirteen".