121452645313 has 4 divisors (see below), whose sum is σ = 121453532608. Its totient is φ = 121451758020.

The previous prime is 121452645311. The next prime is 121452645343. The reversal of 121452645313 is 313546254121.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121452645313 - 2¹ = 121452645311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121452645311) 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, 189981 + ... + 528202.

It is an arithmetic number, because the mean of its divisors is an integer number (30363383152).

Almost surely, 2^121452645313 is an apocalyptic number.

It is an amenable number.

121452645313 is a deficient number, since it is larger than the sum of its proper divisors (887295).

121452645313 is an equidigital number, since it uses as much as digits as its factorization.

121452645313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887294.

The product of its digits is 86400, while the sum is 37.

Adding to 121452645313 its reverse (313546254121), we get a palindrome (434998899434).

The spelling of 121452645313 in words is "one hundred twenty-one billion, four hundred fifty-two million, six hundred forty-five thousand, three hundred thirteen".