102211231 has 2 divisors, whose sum is σ = 102211232. Its totient is φ = 102211230.

The previous prime is 102211217. The next prime is 102211253. The reversal of 102211231 is 132112201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102211231 - 2⁵ = 102211199 is a prime.

It is a super-2 number, since 2×102211231² = 20894271485070722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102211271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105615 + 51105616.

It is an arithmetic number, because the mean of its divisors is an integer number (51105616).

Almost surely, 2^102211231 is an apocalyptic number.

102211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211231 is an equidigital number, since it uses as much as digits as its factorization.

102211231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102211231 is about 10109.9570226584. The cubic root of 102211231 is about 467.5551800806. Note that the first 3 decimals are identical.

Adding to 102211231 its reverse (132112201), we get a palindrome (234323432).

The spelling of 102211231 in words is "one hundred two million, two hundred eleven thousand, two hundred thirty-one".