1231122021060 has 96 divisors (see below), whose sum is σ = 3499300183680. Its totient is φ = 323344438272.

The previous prime is 1231122021053. The next prime is 1231122021061. The reversal of 1231122021060 is 601202211321.

It is a super-2 number, since 2×1231122021060² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231122021061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2907199 + ... + 3303641.

It is an arithmetic number, because the mean of its divisors is an integer number (36451043580).

Almost surely, 2^{1231122021060} is an apocalyptic number.

1231122021060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231122021060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749650091840).

1231122021060 is an abundant number, since it is smaller than the sum of its proper divisors (2268178162620).

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

1231122021060 is a wasteful number, since it uses less digits than its factorization.

1231122021060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397237 (or 397235 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1231122021060 its reverse (601202211321), we get a palindrome (1832324232381).

The spelling of 1231122021060 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, twenty-one thousand, sixty".