11992227013 has 4 divisors (see below), whose sum is σ = 12914706028. Its totient is φ = 11069748000.

The previous prime is 11992226999. The next prime is 11992227019. The reversal of 11992227013 is 31072229911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31072229911 = 71 ⋅437637041.

It can be written as a sum of positive squares in 2 ways, for example, as 4160508004 + 7831719009 = 64502^2 + 88497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11992227013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11992227019) 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, 461239488 + ... + 461239513.

It is an arithmetic number, because the mean of its divisors is an integer number (3228676507).

Almost surely, 2^11992227013 is an apocalyptic number.

11992227013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11992227013 is a deficient number, since it is larger than the sum of its proper divisors (922479015).

11992227013 is an equidigital number, since it uses as much as digits as its factorization.

11992227013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922479014.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 11992227013 in words is "eleven billion, nine hundred ninety-two million, two hundred twenty-seven thousand, thirteen".