12131111019 has 8 divisors (see below), whose sum is σ = 16396387792. Its totient is φ = 7976620800.

The previous prime is 12131110969. The next prime is 12131111021. The reversal of 12131111019 is 91011113121.

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

It is not a de Polignac number, because 12131111019 - 2¹⁷ = 12130979947 is a prime.

It is a super-2 number, since 2×12131111019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131110986 and 12131111004.

It is not an unprimeable number, because it can be changed into a prime (12131111059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27696382 + ... + 27696819.

It is an arithmetic number, because the mean of its divisors is an integer number (2049548474).

Almost surely, 2^12131111019 is an apocalyptic number.

12131111019 is a deficient number, since it is larger than the sum of its proper divisors (4265276773).

12131111019 is an equidigital number, since it uses as much as digits as its factorization.

12131111019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55393277.

The product of its (nonzero) digits is 54, while the sum is 21.

The spelling of 12131111019 in words is "twelve billion, one hundred thirty-one million, one hundred eleven thousand, nineteen".