122131132221 has 64 divisors (see below), whose sum is σ = 198077644800. Its totient is φ = 65432892096.

The previous prime is 122131132219. The next prime is 122131132241. The reversal of 122131132221 is 122231131221.

It is not a de Polignac number, because 122131132221 - 2¹ = 122131132219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122131132241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5292310 + ... + 5315336.

It is an arithmetic number, because the mean of its divisors is an integer number (3094963200).

Almost surely, 2^122131132221 is an apocalyptic number.

It is an amenable number.

122131132221 is a deficient number, since it is larger than the sum of its proper divisors (75946512579).

122131132221 is a wasteful number, since it uses less digits than its factorization.

122131132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23278.

The product of its digits is 288, while the sum is 21.

Adding to 122131132221 its reverse (122231131221), we get a palindrome (244362263442).

The spelling of 122131132221 in words is "one hundred twenty-two billion, one hundred thirty-one million, one hundred thirty-two thousand, two hundred twenty-one".