131224021022 has 4 divisors (see below), whose sum is σ = 196836031536. Its totient is φ = 65612010510.

The previous prime is 131224021021. The next prime is 131224021073. The reversal of 131224021022 is 220120422131.

131224021022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 131224020985 and 131224021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224021021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32806005254 + ... + 32806005257.

It is an arithmetic number, because the mean of its divisors is an integer number (49209007884).

Almost surely, 2^131224021022 is an apocalyptic number.

131224021022 is a deficient number, since it is larger than the sum of its proper divisors (65612010514).

131224021022 is an equidigital number, since it uses as much as digits as its factorization.

131224021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65612010513.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 131224021022 its reverse (220120422131), we get a palindrome (351344443153).

The spelling of 131224021022 in words is "one hundred thirty-one billion, two hundred twenty-four million, twenty-one thousand, twenty-two".