131221015124011 has 8 divisors (see below), whose sum is σ = 133698987964080. Its totient is φ = 128743120233312.

The previous prime is 131221015123937. The next prime is 131221015124039. The reversal of 131221015124011 is 110421510122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131221015124011 - 2⁷ = 131221015123883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131221015124411) 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, 16083165 + ... + 22827838.

It is an arithmetic number, because the mean of its divisors is an integer number (16712373495510).

Almost surely, 2^{131221015124011} is an apocalyptic number.

131221015124011 is a deficient number, since it is larger than the sum of its proper divisors (2477972840069).

131221015124011 is an equidigital number, since it uses as much as digits as its factorization.

131221015124011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38974685.

The product of its (nonzero) digits is 480, while the sum is 25.

Adding to 131221015124011 its reverse (110421510122131), we get a palindrome (241642525246142).

The spelling of 131221015124011 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, fifteen million, one hundred twenty-four thousand, eleven".