131020021122 has 16 divisors (see below), whose sum is σ = 277454162592. Its totient is φ = 41104320320.

The previous prime is 131020021079. The next prime is 131020021129. The reversal of 131020021122 is 221120020131.

It is a super-2 number, since 2×131020021122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131020021129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642254904 + ... + 642255107.

It is an arithmetic number, because the mean of its divisors is an integer number (17340885162).

Almost surely, 2^131020021122 is an apocalyptic number.

131020021122 is an abundant number, since it is smaller than the sum of its proper divisors (146434141470).

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

131020021122 is a wasteful number, since it uses less digits than its factorization.

131020021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284510033.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 131020021122 its reverse (221120020131), we get a palindrome (352140041253).

Subtracting 131020021122 from its reverse (221120020131), we obtain a palindrome (90099999009).

The spelling of 131020021122 in words is "one hundred thirty-one billion, twenty million, twenty-one thousand, one hundred twenty-two".