131220000122 has 8 divisors (see below), whose sum is σ = 198778812372. Its totient is φ = 64960396000.

The previous prime is 131220000091. The next prime is 131220000133. The reversal of 131220000122 is 221000022131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 126850657921 + 4369342201 = 356161^2 + 66101^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 131220000097 and 131220000106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324801779 + ... + 324802182.

Almost surely, 2^131220000122 is an apocalyptic number.

131220000122 is a deficient number, since it is larger than the sum of its proper divisors (67558812250).

131220000122 is a wasteful number, since it uses less digits than its factorization.

131220000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649604064.

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

Adding to 131220000122 its reverse (221000022131), we get a palindrome (352220022253).

The spelling of 131220000122 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred twenty-two", and thus it is an aban number.