121994927 has 2 divisors, whose sum is σ = 121994928. Its totient is φ = 121994926.

The previous prime is 121994911. The next prime is 121994963. The reversal of 121994927 is 729499121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121994927 - 2⁴ = 121994911 is a prime.

It is a super-4 number, since 4×121994927⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121994027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60997463 + 60997464.

It is an arithmetic number, because the mean of its divisors is an integer number (60997464).

Almost surely, 2^121994927 is an apocalyptic number.

121994927 is a deficient number, since it is larger than the sum of its proper divisors (1).

121994927 is an equidigital number, since it uses as much as digits as its factorization.

121994927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 121994927 is about 11045.1313708801. The cubic root of 121994927 is about 495.9606918532.

The spelling of 121994927 in words is "one hundred twenty-one million, nine hundred ninety-four thousand, nine hundred twenty-seven".