1231201132122 has 32 divisors (see below), whose sum is σ = 2655348998400. Its totient is φ = 378326664000.

The previous prime is 1231201132121. The next prime is 1231201132129. The reversal of 1231201132122 is 2212311021321.

It is not an unprimeable number, because it can be changed into a prime (1231201132121) 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, 10450497 + ... + 10567652.

It is an arithmetic number, because the mean of its divisors is an integer number (82979656200).

Almost surely, 2^{1231201132122} is an apocalyptic number.

1231201132122 is an abundant number, since it is smaller than the sum of its proper divisors (1424147866278).

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

1231201132122 is a wasteful number, since it uses less digits than its factorization.

1231201132122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21018918.

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

Adding to 1231201132122 its reverse (2212311021321), we get a palindrome (3443512153443).

The spelling of 1231201132122 in words is "one trillion, two hundred thirty-one billion, two hundred one million, one hundred thirty-two thousand, one hundred twenty-two".