2121499927 has 2 divisors, whose sum is σ = 2121499928. Its totient is φ = 2121499926.

The previous prime is 2121499909. The next prime is 2121499981. The reversal of 2121499927 is 7299941212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121499927 is a prime.

It is a super-2 number, since 2×2121499927² = 9001523880522010658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121499027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060749963 + 1060749964.

It is an arithmetic number, because the mean of its divisors is an integer number (1060749964).

Almost surely, 2^2121499927 is an apocalyptic number.

2121499927 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121499927 is an equidigital number, since it uses as much as digits as its factorization.

2121499927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 2121499927 is about 46059.7430192571. The cubic root of 2121499927 is about 1284.9345507097.

The spelling of 2121499927 in words is "two billion, one hundred twenty-one million, four hundred ninety-nine thousand, nine hundred twenty-seven".