131002444204121 has 4 divisors (see below), whose sum is σ = 149717079090432. Its totient is φ = 112287809317812.

The previous prime is 131002444204057. The next prime is 131002444204129. The reversal of 131002444204121 is 121402444200131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131002444204121 - 2⁶ = 131002444204057 is a prime.

It is a super-2 number, since 2×131002444204121² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131002444204129) 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, 9357317443145 + ... + 9357317443158.

It is an arithmetic number, because the mean of its divisors is an integer number (37429269772608).

Almost surely, 2^{131002444204121} is an apocalyptic number.

It is an amenable number.

131002444204121 is a deficient number, since it is larger than the sum of its proper divisors (18714634886311).

131002444204121 is an equidigital number, since it uses as much as digits as its factorization.

131002444204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18714634886310.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 131002444204121 its reverse (121402444200131), we get a palindrome (252404888404252).

The spelling of 131002444204121 in words is "one hundred thirty-one trillion, two billion, four hundred forty-four million, two hundred four thousand, one hundred twenty-one".