121051644 has 48 divisors (see below), whose sum is σ = 323812608. Its totient is φ = 34478208.

The previous prime is 121051643. The next prime is 121051661. The reversal of 121051644 is 446150121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121051643) 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 15 ways as a sum of consecutive naturals, for example, 27072 + ... + 31224.

It is an arithmetic number, because the mean of its divisors is an integer number (6746096).

Almost surely, 2^121051644 is an apocalyptic number.

121051644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121051644 is an abundant number, since it is smaller than the sum of its proper divisors (202760964).

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

121051644 is a wasteful number, since it uses less digits than its factorization.

121051644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514 (or 4512 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121051644 is about 11002.3472041197. The cubic root of 121051644 is about 494.6791022884.

The spelling of 121051644 in words is "one hundred twenty-one million, fifty-one thousand, six hundred forty-four".