121320355 has 8 divisors (see below), whose sum is σ = 156783312. Its totient is φ = 89590368.

The previous prime is 121320349. The next prime is 121320359. The reversal of 121320355 is 553023121.

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 121320355 - 2⁹ = 121319843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121320359) 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, 933169 + ... + 933298.

It is an arithmetic number, because the mean of its divisors is an integer number (19597914).

Almost surely, 2^121320355 is an apocalyptic number.

121320355 is a deficient number, since it is larger than the sum of its proper divisors (35462957).

121320355 is a wasteful number, since it uses less digits than its factorization.

121320355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866485.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 121320355 is about 11014.5519654682. The cubic root of 121320355 is about 495.0448621041.

Adding to 121320355 its reverse (553023121), we get a palindrome (674343476).

The spelling of 121320355 in words is "one hundred twenty-one million, three hundred twenty thousand, three hundred fifty-five".