102211220939 has 2 divisors, whose sum is σ = 102211220940. Its totient is φ = 102211220938.

The previous prime is 102211220857. The next prime is 102211220989. The reversal of 102211220939 is 939022112201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102211220939 - 2¹² = 102211216843 is a prime.

It is not a weakly prime, because it can be changed into another prime (102211220989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105610469 + 51105610470.

It is an arithmetic number, because the mean of its divisors is an integer number (51105610470).

Almost surely, 2^102211220939 is an apocalyptic number.

102211220939 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211220939 is an equidigital number, since it uses as much as digits as its factorization.

102211220939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 102211220939 in words is "one hundred two billion, two hundred eleven million, two hundred twenty thousand, nine hundred thirty-nine".