231012121220322 has 64 divisors (see below), whose sum is σ = 515735393531904. Its totient is φ = 68529965486400.

The previous prime is 231012121220299. The next prime is 231012121220329. The reversal of 231012121220322 is 223022121210132.

It is a junction number, because it is equal to n+sod(n) for n = 231012121220292 and 231012121220301.

It is not an unprimeable number, because it can be changed into a prime (231012121220329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470013804 + ... + 470505047.

It is an arithmetic number, because the mean of its divisors is an integer number (8058365523936).

Almost surely, 2^{231012121220322} is an apocalyptic number.

231012121220322 is an abundant number, since it is smaller than the sum of its proper divisors (284723272311582).

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

231012121220322 is a wasteful number, since it uses less digits than its factorization.

231012121220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940518983.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 231012121220322 its reverse (223022121210132), we get a palindrome (454034242430454).

The spelling of 231012121220322 in words is "two hundred thirty-one trillion, twelve billion, one hundred twenty-one million, two hundred twenty thousand, three hundred twenty-two".