121344550 has 24 divisors (see below), whose sum is σ = 235516176. Its totient is φ = 46427040.

The previous prime is 121344541. The next prime is 121344569. The reversal of 121344550 is 55443121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51609 + ... + 53908.

It is an arithmetic number, because the mean of its divisors is an integer number (9813174).

Almost surely, 2^121344550 is an apocalyptic number.

121344550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121344550 is a deficient number, since it is larger than the sum of its proper divisors (114171626).

121344550 is a wasteful number, since it uses less digits than its factorization.

121344550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105552 (or 105547 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 121344550 is about 11015.6502304676. The cubic root of 121344550 is about 495.0777689599.

Adding to 121344550 its reverse (55443121), we get a palindrome (176787671).

The spelling of 121344550 in words is "one hundred twenty-one million, three hundred forty-four thousand, five hundred fifty".