102210231 has 4 divisors (see below), whose sum is σ = 136280312. Its totient is φ = 68140152.

The previous prime is 102210223. The next prime is 102210233. The reversal of 102210231 is 132012201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132012201 = 3 ⋅44004067.

It is not a de Polignac number, because 102210231 - 2³ = 102210223 is a prime.

It is a super-2 number, since 2×102210231² = 20893862642146722, 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 (102210233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17035036 + ... + 17035041.

It is an arithmetic number, because the mean of its divisors is an integer number (34070078).

Almost surely, 2^102210231 is an apocalyptic number.

102210231 is a deficient number, since it is larger than the sum of its proper divisors (34070081).

102210231 is an equidigital number, since it uses as much as digits as its factorization.

102210231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34070080.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102210231 is about 10109.9075663430. The cubic root of 102210231 is about 467.5536552752.

Adding to 102210231 its reverse (132012201), we get a palindrome (234222432).

The spelling of 102210231 in words is "one hundred two million, two hundred ten thousand, two hundred thirty-one".