1231202534099 has 4 divisors (see below), whose sum is σ = 1252070373720. Its totient is φ = 1210334694480.

The previous prime is 1231202534077. The next prime is 1231202534117. The reversal of 1231202534099 is 9904352021321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231202534099 - 2²⁴ = 1231185756883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231202534299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10433919722 + ... + 10433919839.

It is an arithmetic number, because the mean of its divisors is an integer number (313017593430).

Almost surely, 2^{1231202534099} is an apocalyptic number.

1231202534099 is a deficient number, since it is larger than the sum of its proper divisors (20867839621).

1231202534099 is an equidigital number, since it uses as much as digits as its factorization.

1231202534099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20867839620.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 1231202534099 in words is "one trillion, two hundred thirty-one billion, two hundred two million, five hundred thirty-four thousand, ninety-nine".