121471216 has 20 divisors (see below), whose sum is σ = 240825112. Its totient is φ = 59322816.

The previous prime is 121471213. The next prime is 121471219. The reversal of 121471216 is 612174121.

It is an interprime number because it is at equal distance from previous prime (121471213) and next prime (121471219).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121471213) 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, 87591 + ... + 88966.

Almost surely, 2^121471216 is an apocalyptic number.

121471216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121471216 is a deficient number, since it is larger than the sum of its proper divisors (119353896).

121471216 is a wasteful number, since it uses less digits than its factorization.

121471216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176608 (or 176602 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 121471216 is about 11021.3980964304. The cubic root of 121471216 is about 495.2499720337.

The spelling of 121471216 in words is "one hundred twenty-one million, four hundred seventy-one thousand, two hundred sixteen".