121471853 has 2 divisors, whose sum is σ = 121471854. Its totient is φ = 121471852.

The previous prime is 121471843. The next prime is 121471859. The reversal of 121471853 is 358174121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113252164 + 8219689 = 10642^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 121471853 - 2²⁶ = 54362989 is a prime.

It is a super-2 number, since 2×121471853² = 29510822142507218, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121471859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60735926 + 60735927.

It is an arithmetic number, because the mean of its divisors is an integer number (60735927).

Almost surely, 2^121471853 is an apocalyptic number.

It is an amenable number.

121471853 is a deficient number, since it is larger than the sum of its proper divisors (1).

121471853 is an equidigital number, since it uses as much as digits as its factorization.

121471853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 121471853 is about 11021.4269947226. The cubic root of 121471853 is about 495.2508377358.

The spelling of 121471853 in words is "one hundred twenty-one million, four hundred seventy-one thousand, eight hundred fifty-three".