121556060 has 24 divisors (see below), whose sum is σ = 255566976. Its totient is φ = 48565440.

The previous prime is 121556051. The next prime is 121556089. The reversal of 121556060 is 60655121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16754 + ... + 22886.

It is an arithmetic number, because the mean of its divisors is an integer number (10648624).

Almost surely, 2^121556060 is an apocalyptic number.

121556060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121556060 is an abundant number, since it is smaller than the sum of its proper divisors (134010916).

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

121556060 is a wasteful number, since it uses less digits than its factorization.

121556060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7133 (or 7131 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 121556060 is about 11025.2464825055. The cubic root of 121556060 is about 495.3652509472.

It can be divided in two parts, 1215 and 56060, that added together give a palindrome (57275).

The spelling of 121556060 in words is "one hundred twenty-one million, five hundred fifty-six thousand, sixty".