102212231 has 4 divisors (see below), whose sum is σ = 111504264. Its totient is φ = 92920200.

The previous prime is 102212219. The next prime is 102212237. The reversal of 102212231 is 132212201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 102212231 - 2¹⁸ = 101950087 is a prime.

It is a super-2 number, since 2×102212231² = 20894680331994722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646000 + ... + 4646021.

It is an arithmetic number, because the mean of its divisors is an integer number (27876066).

Almost surely, 2^102212231 is an apocalyptic number.

102212231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102212231 is a deficient number, since it is larger than the sum of its proper divisors (9292033).

102212231 is an equidigital number, since it uses as much as digits as its factorization.

102212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9292032.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102212231 is about 10110.0064787319. The cubic root of 102212231 is about 467.5567048760.

Adding to 102212231 its reverse (132212201), we get a palindrome (234424432).

The spelling of 102212231 in words is "one hundred two million, two hundred twelve thousand, two hundred thirty-one".