121471971 has 16 divisors (see below), whose sum is σ = 166352928. Its totient is φ = 78796800.

The previous prime is 121471969. The next prime is 121471991. The reversal of 121471971 is 179174121.

It is a happy number.

It is not a de Polignac number, because 121471971 - 2¹ = 121471969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121471991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55131 + ... + 57291.

It is an arithmetic number, because the mean of its divisors is an integer number (10397058).

Almost surely, 2^121471971 is an apocalyptic number.

121471971 is a deficient number, since it is larger than the sum of its proper divisors (44880957).

121471971 is a wasteful number, since it uses less digits than its factorization.

121471971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662.

The product of its digits is 3528, while the sum is 33.

The square root of 121471971 is about 11021.4323479301. The cubic root of 121471971 is about 495.2509981010.

The spelling of 121471971 in words is "one hundred twenty-one million, four hundred seventy-one thousand, nine hundred seventy-one".