121550044 has 24 divisors (see below), whose sum is σ = 265200768. Its totient is φ = 47357040.

The previous prime is 121549957. The next prime is 121550047. The reversal of 121550044 is 440055121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 121549997 and 121550024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121550047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197014 + ... + 197629.

It is an arithmetic number, because the mean of its divisors is an integer number (11050032).

Almost surely, 2^121550044 is an apocalyptic number.

121550044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121550044 is an abundant number, since it is smaller than the sum of its proper divisors (143650724).

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

121550044 is a wasteful number, since it uses less digits than its factorization.

121550044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394665 (or 394663 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 121550044 is about 11024.9736507622. The cubic root of 121550044 is about 495.3570786781.

The spelling of 121550044 in words is "one hundred twenty-one million, five hundred fifty thousand, forty-four".