2121120299 has 2 divisors, whose sum is σ = 2121120300. Its totient is φ = 2121120298.

The previous prime is 2121120229. The next prime is 2121120301. The reversal of 2121120299 is 9920211212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121120299 - 2¹² = 2121116203 is a prime.

Together with 2121120301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2121120229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060560149 + 1060560150.

It is an arithmetic number, because the mean of its divisors is an integer number (1060560150).

Almost surely, 2^2121120299 is an apocalyptic number.

2121120299 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121120299 is an equidigital number, since it uses as much as digits as its factorization.

2121120299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 2121120299 is about 46055.6217958242. The cubic root of 2121120299 is about 1284.8579027013.

The spelling of 2121120299 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred ninety-nine".