121552325113 has 4 divisors (see below), whose sum is σ = 122439568500. Its totient is φ = 120665081728.

The previous prime is 121552325071. The next prime is 121552325131. The reversal of 121552325113 is 311523255121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311523255121 = 13 ⋅23963327317.

It can be written as a sum of positive squares in 2 ways, for example, as 23541378624 + 98010946489 = 153432^2 + 313067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121552325113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121552365113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443621488 + ... + 443621761.

It is an arithmetic number, because the mean of its divisors is an integer number (30609892125).

Almost surely, 2^121552325113 is an apocalyptic number.

It is an amenable number.

121552325113 is a deficient number, since it is larger than the sum of its proper divisors (887243387).

121552325113 is an equidigital number, since it uses as much as digits as its factorization.

121552325113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887243386.

The product of its digits is 9000, while the sum is 31.

The spelling of 121552325113 in words is "one hundred twenty-one billion, five hundred fifty-two million, three hundred twenty-five thousand, one hundred thirteen".