1201232021113 has 4 divisors (see below), whose sum is σ = 1205094503808. Its totient is φ = 1197369538420.

The previous prime is 1201232021053. The next prime is 1201232021177. The reversal of 1201232021113 is 3111202321021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201232021113 - 2²⁵ = 1201198466681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201232021813) by changing a digit.

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, 1931240881 + ... + 1931241502.

It is an arithmetic number, because the mean of its divisors is an integer number (301273625952).

Almost surely, 2^{1201232021113} is an apocalyptic number.

It is an amenable number.

1201232021113 is a deficient number, since it is larger than the sum of its proper divisors (3862482695).

1201232021113 is an equidigital number, since it uses as much as digits as its factorization.

1201232021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862482694.

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

Adding to 1201232021113 its reverse (3111202321021), we get a palindrome (4312434342134).

The spelling of 1201232021113 in words is "one trillion, two hundred one billion, two hundred thirty-two million, twenty-one thousand, one hundred thirteen".