2120998237 has 2 divisors, whose sum is σ = 2120998238. Its totient is φ = 2120998236.

The previous prime is 2120998213. The next prime is 2120998277. The reversal of 2120998237 is 7328990212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1650715641 + 470282596 = 40629^2 + 21686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120998237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120998193 and 2120998202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120998277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060499118 + 1060499119.

It is an arithmetic number, because the mean of its divisors is an integer number (1060499119).

Almost surely, 2^2120998237 is an apocalyptic number.

It is an amenable number.

2120998237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120998237 is an equidigital number, since it uses as much as digits as its factorization.

2120998237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 2120998237 is about 46054.2966182310. The cubic root of 2120998237 is about 1284.8332560820.

The spelling of 2120998237 in words is "two billion, one hundred twenty million, nine hundred ninety-eight thousand, two hundred thirty-seven".