121352523 has 4 divisors (see below), whose sum is σ = 161803368. Its totient is φ = 80901680.

The previous prime is 121352521. The next prime is 121352527. The reversal of 121352523 is 325253121.

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: 325253121 = 3 ⋅108417707.

It is a cyclic number.

It is not a de Polignac number, because 121352523 - 2¹ = 121352521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121352493 and 121352502.

It is not an unprimeable number, because it can be changed into a prime (121352521) 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, 20225418 + ... + 20225423.

It is an arithmetic number, because the mean of its divisors is an integer number (40450842).

Almost surely, 2^121352523 is an apocalyptic number.

121352523 is a deficient number, since it is larger than the sum of its proper divisors (40450845).

121352523 is an equidigital number, since it uses as much as digits as its factorization.

121352523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40450844.

The product of its digits is 1800, while the sum is 24.

The square root of 121352523 is about 11016.0121187297. The cubic root of 121352523 is about 495.0886118274.

The spelling of 121352523 in words is "one hundred twenty-one million, three hundred fifty-two thousand, five hundred twenty-three".