121444212414513 has 4 divisors (see below), whose sum is σ = 161925616552688. Its totient is φ = 80962808276340.

The previous prime is 121444212414403. The next prime is 121444212414523. The reversal of 121444212414513 is 315414212444121.

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 not a de Polignac number, because 121444212414513 - 2³² = 121439917447217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121444212414523) 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, 20240702069083 + ... + 20240702069088.

It is an arithmetic number, because the mean of its divisors is an integer number (40481404138172).

Almost surely, 2^{121444212414513} is an apocalyptic number.

It is an amenable number.

121444212414513 is a deficient number, since it is larger than the sum of its proper divisors (40481404138175).

121444212414513 is an equidigital number, since it uses as much as digits as its factorization.

121444212414513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40481404138174.

The product of its digits is 122880, while the sum is 39.

Adding to 121444212414513 its reverse (315414212444121), we get a palindrome (436858424858634).

The spelling of 121444212414513 in words is "one hundred twenty-one trillion, four hundred forty-four billion, two hundred twelve million, four hundred fourteen thousand, five hundred thirteen".