121455633 has 16 divisors (see below), whose sum is σ = 184657536. Its totient is φ = 70344960.

The previous prime is 121455623. The next prime is 121455641. The reversal of 121455633 is 336554121.

It is not a de Polignac number, because 121455633 - 2⁵ = 121455601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121455633.

It is not an unprimeable number, because it can be changed into a prime (121455623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90933 + ... + 92258.

It is an arithmetic number, because the mean of its divisors is an integer number (11541096).

Almost surely, 2^121455633 is an apocalyptic number.

121455633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121455633 is a deficient number, since it is larger than the sum of its proper divisors (63201903).

121455633 is a wasteful number, since it uses less digits than its factorization.

121455633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183224.

The product of its digits is 10800, while the sum is 30.

The square root of 121455633 is about 11020.6911307776. The cubic root of 121455633 is about 495.2287933254.

The spelling of 121455633 in words is "one hundred twenty-one million, four hundred fifty-five thousand, six hundred thirty-three".