20112131132122 has 4 divisors (see below), whose sum is σ = 30168196698186. Its totient is φ = 10056065566060.

The previous prime is 20112131132083. The next prime is 20112131132167. The reversal of 20112131132122 is 22123113121102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11104083333841 + 9008047798281 = 3332279^2 + 3001341^2 .

It is a super-2 number, since 2×20112131132122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20112131132093 and 20112131132102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028032783029 + ... + 5028032783032.

Almost surely, 2^{20112131132122} is an apocalyptic number.

20112131132122 is a deficient number, since it is larger than the sum of its proper divisors (10056065566064).

20112131132122 is a wasteful number, since it uses less digits than its factorization.

20112131132122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056065566063.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20112131132122 its reverse (22123113121102), we get a palindrome (42235244253224).

The spelling of 20112131132122 in words is "twenty trillion, one hundred twelve billion, one hundred thirty-one million, one hundred thirty-two thousand, one hundred twenty-two".