1212233112131 has 4 divisors (see below), whose sum is σ = 1212239041200. Its totient is φ = 1212227183064.

The previous prime is 1212233112127. The next prime is 1212233112157. The reversal of 1212233112131 is 1312113322121.

It is a happy number.

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 1212233112131 - 2² = 1212233112127 is a prime.

It is a super-2 number, since 2×1212233112131² (a number of 25 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 = 1212233112097 and 1212233112106.

It is not an unprimeable number, because it can be changed into a prime (1212233112161) 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, 2646476 + ... + 3070553.

It is an arithmetic number, because the mean of its divisors is an integer number (303059760300).

Almost surely, 2^{1212233112131} is an apocalyptic number.

1212233112131 is a deficient number, since it is larger than the sum of its proper divisors (5929069).

1212233112131 is an equidigital number, since it uses as much as digits as its factorization.

1212233112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929068.

The product of its digits is 432, while the sum is 23.

Adding to 1212233112131 its reverse (1312113322121), we get a palindrome (2524346434252).

The spelling of 1212233112131 in words is "one trillion, two hundred twelve billion, two hundred thirty-three million, one hundred twelve thousand, one hundred thirty-one".