131021012229 has 4 divisors (see below), whose sum is σ = 174694682976. Its totient is φ = 87347341484.

The previous prime is 131021012219. The next prime is 131021012249. The reversal of 131021012229 is 922210120131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922210120131 = 3 ⋅307403373377.

It is a cyclic number.

It is not a de Polignac number, because 131021012229 - 2¹⁷ = 131020881157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131021012199 and 131021012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021012219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21836835369 + ... + 21836835374.

It is an arithmetic number, because the mean of its divisors is an integer number (43673670744).

Almost surely, 2^131021012229 is an apocalyptic number.

It is an amenable number.

131021012229 is a deficient number, since it is larger than the sum of its proper divisors (43673670747).

131021012229 is an equidigital number, since it uses as much as digits as its factorization.

131021012229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43673670746.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 131021012229 in words is "one hundred thirty-one billion, twenty-one million, twelve thousand, two hundred twenty-nine".