121633444 has 12 divisors (see below), whose sum is σ = 213225264. Its totient is φ = 60711944.

The previous prime is 121633433. The next prime is 121633469. The reversal of 121633444 is 444336121.

It is a super-2 number, since 2×121633444² = 29589389398602272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23554 + ... + 28249.

It is an arithmetic number, because the mean of its divisors is an integer number (17768772).

Almost surely, 2^121633444 is an apocalyptic number.

It is an amenable number.

121633444 is a deficient number, since it is larger than the sum of its proper divisors (91591820).

121633444 is a wasteful number, since it uses less digits than its factorization.

121633444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52394 (or 52392 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 121633444 is about 11028.7553241515. The cubic root of 121633444 is about 495.4703470731.

Adding to 121633444 its reverse (444336121), we get a palindrome (565969565).

The spelling of 121633444 in words is "one hundred twenty-one million, six hundred thirty-three thousand, four hundred forty-four".