121332550 has 12 divisors (see below), whose sum is σ = 225678636. Its totient is φ = 48533000.

The previous prime is 121332503. The next prime is 121332551. The reversal of 121332550 is 55233121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121332551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1213276 + ... + 1213375.

It is an arithmetic number, because the mean of its divisors is an integer number (18806553).

Almost surely, 2^121332550 is an apocalyptic number.

121332550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121332550 is a deficient number, since it is larger than the sum of its proper divisors (104346086).

121332550 is a wasteful number, since it uses less digits than its factorization.

121332550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426663 (or 2426658 counting only the distinct ones).

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

The square root of 121332550 is about 11015.1055373973. The cubic root of 121332550 is about 495.0614486855.

Adding to 121332550 its reverse (55233121), we get a palindrome (176565671).

The spelling of 121332550 in words is "one hundred twenty-one million, three hundred thirty-two thousand, five hundred fifty".