121153444 has 6 divisors (see below), whose sum is σ = 212018534. Its totient is φ = 60576720.

The previous prime is 121153427. The next prime is 121153453. The reversal of 121153444 is 444351121.

It can be written as a sum of positive squares in only one way, i.e., 63393444 + 57760000 = 7962^2 + 7600^2 .

It is a super-2 number, since 2×121153444² = 29356313986122272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15144177 + ... + 15144184.

Almost surely, 2^121153444 is an apocalyptic number.

It is an amenable number.

121153444 is a deficient number, since it is larger than the sum of its proper divisors (90865090).

121153444 is a wasteful number, since it uses less digits than its factorization.

121153444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30288365 (or 30288363 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 121153444 is about 11006.9725174546. The cubic root of 121153444 is about 494.8177324384.

The spelling of 121153444 in words is "one hundred twenty-one million, one hundred fifty-three thousand, four hundred forty-four".