121471556 has 12 divisors (see below), whose sum is σ = 221817792. Its totient is φ = 58095048.

The previous prime is 121471531. The next prime is 121471573. The reversal of 121471556 is 655174121.

It is a super-2 number, since 2×121471556² = 29510677834122272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660080 + ... + 660263.

It is an arithmetic number, because the mean of its divisors is an integer number (18484816).

Almost surely, 2^121471556 is an apocalyptic number.

It is an amenable number.

121471556 is a deficient number, since it is larger than the sum of its proper divisors (100346236).

121471556 is a wasteful number, since it uses less digits than its factorization.

121471556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320370 (or 1320368 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 121471556 is about 11021.4135209600. The cubic root of 121471556 is about 495.2504341043.

The spelling of 121471556 in words is "one hundred twenty-one million, four hundred seventy-one thousand, five hundred fifty-six".