131222129999 has 8 divisors (see below), whose sum is σ = 133612796448. Its totient is φ = 128839188960.

The previous prime is 131222129981. The next prime is 131222130001. The reversal of 131222129999 is 999921222131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131222129999 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 (131222129099) 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, 1897067 + ... + 1965020.

It is an arithmetic number, because the mean of its divisors is an integer number (16701599556).

Almost surely, 2^131222129999 is an apocalyptic number.

131222129999 is a deficient number, since it is larger than the sum of its proper divisors (2390666449).

131222129999 is an equidigital number, since it uses as much as digits as its factorization.

131222129999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862705.

The product of its digits is 314928, while the sum is 50.

The spelling of 131222129999 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred twenty-nine thousand, nine hundred ninety-nine".