131220211333 has 16 divisors (see below), whose sum is σ = 137019686400. Its totient is φ = 125519581440.

The previous prime is 131220211327. The next prime is 131220211357. The reversal of 131220211333 is 333112022131.

It is a cyclic number.

It is not a de Polignac number, because 131220211333 - 2¹³ = 131220203141 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 (131220211933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11634585 + ... + 11645857.

It is an arithmetic number, because the mean of its divisors is an integer number (8563730400).

Almost surely, 2^131220211333 is an apocalyptic number.

It is an amenable number.

131220211333 is a deficient number, since it is larger than the sum of its proper divisors (5799475067).

131220211333 is a wasteful number, since it uses less digits than its factorization.

131220211333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15612.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131220211333 its reverse (333112022131), we get a palindrome (464332233464).

The spelling of 131220211333 in words is "one hundred thirty-one billion, two hundred twenty million, two hundred eleven thousand, three hundred thirty-three".