2121503983 has 2 divisors, whose sum is σ = 2121503984. Its totient is φ = 2121503982.

The previous prime is 2121503953. The next prime is 2121504023. The reversal of 2121503983 is 3893051212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121503983 - 2²⁵ = 2087949551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121503953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060751991 + 1060751992.

It is an arithmetic number, because the mean of its divisors is an integer number (1060751992).

Almost surely, 2^2121503983 is an apocalyptic number.

2121503983 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121503983 is an equidigital number, since it uses as much as digits as its factorization.

2121503983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2121503983 is about 46059.7870490084. The cubic root of 2121503983 is about 1284.9353695787.

The spelling of 2121503983 in words is "two billion, one hundred twenty-one million, five hundred three thousand, nine hundred eighty-three".