131121222122 has 128 divisors (see below), whose sum is σ = 235585179648. Its totient is φ = 54071424000.

The previous prime is 131121222103. The next prime is 131121222131. The reversal of 131121222122 is 221222121131.

It is a junction number, because it is equal to n+sod(n) for n = 131121222094 and 131121222103.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 260678123 + ... + 260678625.

It is an arithmetic number, because the mean of its divisors is an integer number (1840509216).

Almost surely, 2^131121222122 is an apocalyptic number.

131121222122 is a deficient number, since it is larger than the sum of its proper divisors (104463957526).

131121222122 is a wasteful number, since it uses less digits than its factorization.

131121222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

The product of its digits is 192, while the sum is 20.

Adding to 131121222122 its reverse (221222121131), we get a palindrome (352343343253).

The spelling of 131121222122 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".