102220313 has 4 divisors (see below), whose sum is σ = 110083428. Its totient is φ = 94357200.

The previous prime is 102220297. The next prime is 102220343. The reversal of 102220313 is 313022201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62932489 + 39287824 = 7933^2 + 6268^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220313 - 2⁴ = 102220297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102220343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931538 + ... + 3931563.

It is an arithmetic number, because the mean of its divisors is an integer number (27520857).

Almost surely, 2^102220313 is an apocalyptic number.

102220313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

102220313 is a deficient number, since it is larger than the sum of its proper divisors (7863115).

102220313 is an equidigital number, since it uses as much as digits as its factorization.

102220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7863114.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 102220313 is about 10110.4061738389. The cubic root of 102220313 is about 467.5690279077.

Adding to 102220313 its reverse (313022201), we get a palindrome (415242514).

The spelling of 102220313 in words is "one hundred two million, two hundred twenty thousand, three hundred thirteen".