1231113021202 has 8 divisors (see below), whose sum is σ = 1859063287500. Its totient is φ = 611425258704.

The previous prime is 1231113021181. The next prime is 1231113021217. The reversal of 1231113021202 is 2021203111321.

It can be written as a sum of positive squares in 2 ways, for example, as 1230633016921 + 480004281 = 1109339^2 + 21909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1231113021202² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231113021202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2065625577 + ... + 2065626172.

Almost surely, 2^{1231113021202} is an apocalyptic number.

1231113021202 is a deficient number, since it is larger than the sum of its proper divisors (627950266298).

1231113021202 is a wasteful number, since it uses less digits than its factorization.

1231113021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131251900.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1231113021202 its reverse (2021203111321), we get a palindrome (3252316132523).

The spelling of 1231113021202 in words is "one trillion, two hundred thirty-one billion, one hundred thirteen million, twenty-one thousand, two hundred two".