11813490870121 has 4 divisors (see below), whose sum is σ = 11879488026000. Its totient is φ = 11747493714244.

The previous prime is 11813490869993. The next prime is 11813490870133. The reversal of 11813490870121 is 12107809431811.

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 11813490870121 - 2⁷ = 11813490869993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11813490870151) 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, 32998577671 + ... + 32998578028.

It is an arithmetic number, because the mean of its divisors is an integer number (2969872006500).

Almost surely, 2^{11813490870121} is an apocalyptic number.

It is an amenable number.

11813490870121 is a deficient number, since it is larger than the sum of its proper divisors (65997155879).

11813490870121 is an equidigital number, since it uses as much as digits as its factorization.

11813490870121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65997155878.

The product of its (nonzero) digits is 96768, while the sum is 46.

The spelling of 11813490870121 in words is "eleven trillion, eight hundred thirteen billion, four hundred ninety million, eight hundred seventy thousand, one hundred twenty-one".