121537373 has 4 divisors (see below), whose sum is σ = 121656288. Its totient is φ = 121418460.

The previous prime is 121537343. The next prime is 121537379. The reversal of 121537373 is 373735121.

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 an emirpimes, since its reverse is a distinct semiprime: 373735121 = 4111 ⋅90911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121537373 is a prime.

It is a super-2 number, since 2×121537373² = 29542666071482258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121537379) 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, 57911 + ... + 59972.

It is an arithmetic number, because the mean of its divisors is an integer number (30414072).

Almost surely, 2^121537373 is an apocalyptic number.

It is an amenable number.

121537373 is a deficient number, since it is larger than the sum of its proper divisors (118915).

121537373 is a wasteful number, since it uses less digits than its factorization.

121537373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118914.

The product of its digits is 13230, while the sum is 32.

The square root of 121537373 is about 11024.3989858858. The cubic root of 121537373 is about 495.3398652257.

The spelling of 121537373 in words is "one hundred twenty-one million, five hundred thirty-seven thousand, three hundred seventy-three".