121699355 has 8 divisors (see below), whose sum is σ = 146329200. Its totient is φ = 97166176.

The previous prime is 121699349. The next prime is 121699367. The reversal of 121699355 is 553996121.

It is a happy number.

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 121699355 - 2¹⁴ = 121682971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21365 + ... + 26454.

It is an arithmetic number, because the mean of its divisors is an integer number (18291150).

Almost surely, 2^121699355 is an apocalyptic number.

121699355 is a deficient number, since it is larger than the sum of its proper divisors (24629845).

121699355 is an equidigital number, since it uses as much as digits as its factorization.

121699355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48333.

The product of its digits is 72900, while the sum is 41.

The square root of 121699355 is about 11031.7430626352. The cubic root of 121699355 is about 495.5598264356.

The spelling of 121699355 in words is "one hundred twenty-one million, six hundred ninety-nine thousand, three hundred fifty-five".