131000202221 has 8 divisors (see below), whose sum is σ = 149725215744. Its totient is φ = 112277863440.

The previous prime is 131000202217. The next prime is 131000202251. The reversal of 131000202221 is 122202000131.

It is a happy number.

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 131000202221 - 2² = 131000202217 is a prime.

It is a super-2 number, since 2×131000202221² (a number of 23 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 = 131000202196 and 131000202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000202211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562610 + ... + 760611.

It is an arithmetic number, because the mean of its divisors is an integer number (18715651968).

Almost surely, 2^131000202221 is an apocalyptic number.

It is an amenable number.

131000202221 is a deficient number, since it is larger than the sum of its proper divisors (18725013523).

131000202221 is a wasteful number, since it uses less digits than its factorization.

131000202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337371.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 131000202221 its reverse (122202000131), we get a palindrome (253202202352).

The spelling of 131000202221 in words is "one hundred thirty-one billion, two hundred two thousand, two hundred twenty-one".