121054512 has 20 divisors (see below), whose sum is σ = 312724280. Its totient is φ = 40351488.

The previous prime is 121054511. The next prime is 121054517. The reversal of 121054512 is 215450121.

It is not an unprimeable number, because it can be changed into a prime (121054511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260937 + ... + 1261032.

It is an arithmetic number, because the mean of its divisors is an integer number (15636214).

Almost surely, 2^121054512 is an apocalyptic number.

121054512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121054512 is an abundant number, since it is smaller than the sum of its proper divisors (191669768).

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

121054512 is a wasteful number, since it uses less digits than its factorization.

121054512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521980 (or 2521974 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 121054512 is about 11002.4775391727. The cubic root of 121054512 is about 494.6830089639.

The spelling of 121054512 in words is "one hundred twenty-one million, fifty-four thousand, five hundred twelve".