121225552 has 40 divisors (see below), whose sum is σ = 272123456. Its totient is φ = 51238656.

The previous prime is 121225547. The next prime is 121225603. The reversal of 121225552 is 255522121.

It is a congruent number.

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, 763 + ... + 15589.

Almost surely, 2^121225552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121225552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136061728).

121225552 is an abundant number, since it is smaller than the sum of its proper divisors (150897904).

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

121225552 is a wasteful number, since it uses less digits than its factorization.

121225552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915 (or 14909 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 121225552 is about 11010.2475903133. The cubic root of 121225552 is about 494.9158813629.

Adding to 121225552 its reverse (255522121), we get a palindrome (376747673).

The spelling of 121225552 in words is "one hundred twenty-one million, two hundred twenty-five thousand, five hundred fifty-two".