1231122021162 has 32 divisors (see below), whose sum is σ = 2705408778240. Its totient is φ = 370383339120.

The previous prime is 1231122021161. The next prime is 1231122021251. The reversal of 1231122021162 is 2611202211321.

It is a happy number.

It is a super-2 number, since 2×1231122021162² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231122021161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67089258 + ... + 67107605.

It is an arithmetic number, because the mean of its divisors is an integer number (84544024320).

Almost surely, 2^{1231122021162} is an apocalyptic number.

1231122021162 is an abundant number, since it is smaller than the sum of its proper divisors (1474286757078).

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

1231122021162 is a wasteful number, since it uses less digits than its factorization.

1231122021162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134197018.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1231122021162 its reverse (2611202211321), we get a palindrome (3842324232483).

The spelling of 1231122021162 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, twenty-one thousand, one hundred sixty-two".