121329953 has 8 divisors (see below), whose sum is σ = 127886400. Its totient is φ = 114790608.

The previous prime is 121329941. The next prime is 121329977. The reversal of 121329953 is 359923121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121329953 - 2¹⁸ = 121067809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121329053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11900 + ... + 19602.

It is an arithmetic number, because the mean of its divisors is an integer number (15985800).

Almost surely, 2^121329953 is an apocalyptic number.

It is an amenable number.

121329953 is a deficient number, since it is larger than the sum of its proper divisors (6556447).

121329953 is an equidigital number, since it uses as much as digits as its factorization.

121329953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551.

The product of its digits is 14580, while the sum is 35.

The square root of 121329953 is about 11014.9876531933. The cubic root of 121329953 is about 495.0579165645.

The spelling of 121329953 in words is "one hundred twenty-one million, three hundred twenty-nine thousand, nine hundred fifty-three".