221129790313 has 2 divisors, whose sum is σ = 221129790314. Its totient is φ = 221129790312.

The previous prime is 221129790281. The next prime is 221129790341. The reversal of 221129790313 is 313097921122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161658676624 + 59471113689 = 402068^2 + 243867^2 .

It is a cyclic number.

It is not a de Polignac number, because 221129790313 - 2⁵ = 221129790281 is a prime.

It is not a weakly prime, because it can be changed into another prime (221129790913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110564895156 + 110564895157.

It is an arithmetic number, because the mean of its divisors is an integer number (110564895157).

Almost surely, 2^221129790313 is an apocalyptic number.

It is an amenable number.

221129790313 is a deficient number, since it is larger than the sum of its proper divisors (1).

221129790313 is an equidigital number, since it uses as much as digits as its factorization.

221129790313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 221129790313 in words is "two hundred twenty-one billion, one hundred twenty-nine million, seven hundred ninety thousand, three hundred thirteen".