2121099983 has 2 divisors, whose sum is σ = 2121099984. Its totient is φ = 2121099982.

The previous prime is 2121099947. The next prime is 2121100019. The reversal of 2121099983 is 3899901212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2121099947) and next prime (2121100019).

It is a cyclic number.

It is not a de Polignac number, because 2121099983 - 2⁶ = 2121099919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121099913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060549991 + 1060549992.

It is an arithmetic number, because the mean of its divisors is an integer number (1060549992).

Almost surely, 2^2121099983 is an apocalyptic number.

2121099983 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121099983 is an equidigital number, since it uses as much as digits as its factorization.

2121099983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 2121099983 is about 46055.4012359028. The cubic root of 2121099983 is about 1284.8538005835.

The spelling of 2121099983 in words is "two billion, one hundred twenty-one million, ninety-nine thousand, nine hundred eighty-three".