121154512 has 40 divisors (see below), whose sum is σ = 249841152. Its totient is φ = 56716800.

The previous prime is 121154497. The next prime is 121154513. The reversal of 121154512 is 215451121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56337 + ... + 58447.

Almost surely, 2^121154512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121154512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124920576).

121154512 is an abundant number, since it is smaller than the sum of its proper divisors (128686640).

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

121154512 is a wasteful number, since it uses less digits than its factorization.

121154512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347 (or 2341 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 121154512 is about 11007.0210320504. The cubic root of 121154512 is about 494.8191864177.

The spelling of 121154512 in words is "one hundred twenty-one million, one hundred fifty-four thousand, five hundred twelve".