131122221013 has 32 divisors (see below), whose sum is σ = 170275276800. Its totient is φ = 98333839296.

The previous prime is 131122220989. The next prime is 131122221017. The reversal of 131122221013 is 310122221131.

It is a de Polignac number, because none of the positive numbers 2^k-131122221013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122221017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650331 + ... + 827752.

It is an arithmetic number, because the mean of its divisors is an integer number (5321102400).

Almost surely, 2^131122221013 is an apocalyptic number.

It is an amenable number.

131122221013 is a deficient number, since it is larger than the sum of its proper divisors (39153055787).

131122221013 is a wasteful number, since it uses less digits than its factorization.

131122221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478161.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131122221013 its reverse (310122221131), we get a palindrome (441244442144).

The spelling of 131122221013 in words is "one hundred thirty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, thirteen".