102211331 has 2 divisors, whose sum is σ = 102211332. Its totient is φ = 102211330.

The previous prime is 102211303. The next prime is 102211337. The reversal of 102211331 is 133112201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102211331 is a prime.

It is a super-2 number, since 2×102211331² = 20894312369583122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (102211337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105665 + 51105666.

It is an arithmetic number, because the mean of its divisors is an integer number (51105666).

Almost surely, 2^102211331 is an apocalyptic number.

102211331 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211331 is an equidigital number, since it uses as much as digits as its factorization.

102211331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 102211331 is about 10109.9619682766. The cubic root of 102211331 is about 467.5553325605. Note that the first 3 decimals are identical.

Adding to 102211331 its reverse (133112201), we get a palindrome (235323532).

The spelling of 102211331 in words is "one hundred two million, two hundred eleven thousand, three hundred thirty-one".