121553116 has 6 divisors (see below), whose sum is σ = 212717960. Its totient is φ = 60776556.

The previous prime is 121553041. The next prime is 121553149. The reversal of 121553116 is 611355121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15194136 + ... + 15194143.

Almost surely, 2^121553116 is an apocalyptic number.

It is an amenable number.

121553116 is a deficient number, since it is larger than the sum of its proper divisors (91164844).

121553116 is a wasteful number, since it uses less digits than its factorization.

121553116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30388283 (or 30388281 counting only the distinct ones).

The product of its digits is 900, while the sum is 25.

The square root of 121553116 is about 11025.1129699428. The cubic root of 121553116 is about 495.3612517854.

The spelling of 121553116 in words is "one hundred twenty-one million, five hundred fifty-three thousand, one hundred sixteen".