231222066250 has 40 divisors (see below), whose sum is σ = 495317322720. Its totient is φ = 79276134000.

The previous prime is 231222066223. The next prime is 231222066253. The reversal of 231222066250 is 52660222132.

It is not an unprimeable number, because it can be changed into a prime (231222066253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13203940 + ... + 13221439.

It is an arithmetic number, because the mean of its divisors is an integer number (12382933068).

Almost surely, 2^231222066250 is an apocalyptic number.

231222066250 is an abundant number, since it is smaller than the sum of its proper divisors (264095256470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231222066250 is an equidigital number, since it uses as much as digits as its factorization.

231222066250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26425408 (or 26425393 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 231222066250 its reverse (52660222132), we get a palindrome (283882288382).

The spelling of 231222066250 in words is "two hundred thirty-one billion, two hundred twenty-two million, sixty-six thousand, two hundred fifty".