131122222122 has 8 divisors (see below), whose sum is σ = 262244444256. Its totient is φ = 43707407372.

The previous prime is 131122222087. The next prime is 131122222141. The reversal of 131122222122 is 221222221131.

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

131122222122 is an admirable number.

It is a super-2 number, since 2×131122222122² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 10926851838 + ... + 10926851849.

It is an arithmetic number, because the mean of its divisors is an integer number (32780555532).

Almost surely, 2^131122222122 is an apocalyptic number.

131122222122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131122222122 is a wasteful number, since it uses less digits than its factorization.

131122222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21853703692.

The product of its digits is 384, while the sum is 21.

Adding to 131122222122 its reverse (221222221131), we get a palindrome (352344443253).

Subtracting 131122222122 from its reverse (221222221131), we obtain a palindrome (90099999009).

The spelling of 131122222122 in words is "one hundred thirty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".