102220379 has 2 divisors, whose sum is σ = 102220380. Its totient is φ = 102220378.

The previous prime is 102220351. The next prime is 102220403. The reversal of 102220379 is 973022201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102220379 - 2⁸ = 102220123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102225379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110189 + 51110190.

It is an arithmetic number, because the mean of its divisors is an integer number (51110190).

Almost surely, 2^102220379 is an apocalyptic number.

102220379 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220379 is an equidigital number, since it uses as much as digits as its factorization.

102220379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 102220379 is about 10110.4094378022. The cubic root of 102220379 is about 467.5691285386.

The spelling of 102220379 in words is "one hundred two million, two hundred twenty thousand, three hundred seventy-nine".