121365552 has 120 divisors (see below), whose sum is σ = 397956672. Its totient is φ = 31516800.

The previous prime is 121365511. The next prime is 121365557. The reversal of 121365552 is 255563121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121365557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23527 + ... + 28217.

Almost surely, 2^121365552 is an apocalyptic number.

121365552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121365552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198978336).

121365552 is an abundant number, since it is smaller than the sum of its proper divisors (276591120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121365552 is a wasteful number, since it uses less digits than its factorization.

121365552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727 (or 4714 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 121365552 is about 11016.6034693094. The cubic root of 121365552 is about 495.1063295710.

The spelling of 121365552 in words is "one hundred twenty-one million, three hundred sixty-five thousand, five hundred fifty-two".