121694253 has 4 divisors (see below), whose sum is σ = 162259008. Its totient is φ = 81129500.

The previous prime is 121694161. The next prime is 121694263. The reversal of 121694253 is 352496121.

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 a cyclic number.

It is not a de Polignac number, because 121694253 - 2¹⁴ = 121677869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121694263) 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, 20282373 + ... + 20282378.

It is an arithmetic number, because the mean of its divisors is an integer number (40564752).

Almost surely, 2^121694253 is an apocalyptic number.

It is an amenable number.

121694253 is a deficient number, since it is larger than the sum of its proper divisors (40564755).

121694253 is an equidigital number, since it uses as much as digits as its factorization.

121694253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40564754.

The product of its digits is 12960, while the sum is 33.

The square root of 121694253 is about 11031.5118184227. The cubic root of 121694253 is about 495.5529012235.

The spelling of 121694253 in words is "one hundred twenty-one million, six hundred ninety-four thousand, two hundred fifty-three".