12213111131 has 8 divisors (see below), whose sum is σ = 13165477584. Its totient is φ = 11262587040.

The previous prime is 12213111101. The next prime is 12213111133. The reversal of 12213111131 is 13111131221.

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

It is a cyclic number.

It is not a de Polignac number, because 12213111131 - 2²² = 12208916827 is a prime.

It is a super-2 number, since 2×12213111131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213111133) 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, 446801 + ... + 473346.

It is an arithmetic number, because the mean of its divisors is an integer number (1645684698).

Almost surely, 2^12213111131 is an apocalyptic number.

12213111131 is a deficient number, since it is larger than the sum of its proper divisors (952366453).

12213111131 is a wasteful number, since it uses less digits than its factorization.

12213111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921181.

The product of its digits is 36, while the sum is 17.

Adding to 12213111131 its reverse (13111131221), we get a palindrome (25324242352).

The spelling of 12213111131 in words is "twelve billion, two hundred thirteen million, one hundred eleven thousand, one hundred thirty-one".