1231122021160 has 32 divisors (see below), whose sum is σ = 2770066690560. Its totient is φ = 492441316416.

The previous prime is 1231122021149. The next prime is 1231122021161. The reversal of 1231122021160 is 611202211321.

It is a super-2 number, since 2×1231122021160² (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 7 ways as a sum of consecutive naturals, for example, 2968897 + ... + 3358063.

It is an arithmetic number, because the mean of its divisors is an integer number (86564584080).

Almost surely, 2^{1231122021160} is an apocalyptic number.

1231122021160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231122021160 is an abundant number, since it is smaller than the sum of its proper divisors (1538944669400).

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

1231122021160 is a wasteful number, since it uses less digits than its factorization.

1231122021160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468265 (or 468261 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1231122021160 its reverse (611202211321), we get a palindrome (1842324232481).

The spelling of 1231122021160 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, twenty-one thousand, one hundred sixty".