121546556 has 12 divisors (see below), whose sum is σ = 215399520. Its totient is φ = 60003840.

The previous prime is 121546541. The next prime is 121546561. The reversal of 121546556 is 655645121.

It is a super-2 number, since 2×121546556² = 29547130550922272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192005 + ... + 192636.

It is an arithmetic number, because the mean of its divisors is an integer number (17949960).

Almost surely, 2^121546556 is an apocalyptic number.

It is an amenable number.

121546556 is a deficient number, since it is larger than the sum of its proper divisors (93852964).

121546556 is a wasteful number, since it uses less digits than its factorization.

121546556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384724 (or 384722 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 121546556 is about 11024.8154633082. The cubic root of 121546556 is about 495.3523403772.

The spelling of 121546556 in words is "one hundred twenty-one million, five hundred forty-six thousand, five hundred fifty-six".