2120220187 has 2 divisors, whose sum is σ = 2120220188. Its totient is φ = 2120220186.

The previous prime is 2120220181. The next prime is 2120220191. The reversal of 2120220187 is 7810220212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120220187 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120220181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060110093 + 1060110094.

It is an arithmetic number, because the mean of its divisors is an integer number (1060110094).

Almost surely, 2^2120220187 is an apocalyptic number.

2120220187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120220187 is an equidigital number, since it uses as much as digits as its factorization.

2120220187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 2120220187 is about 46045.8487488286. The cubic root of 2120220187 is about 1284.6761308884.

Adding to 2120220187 its sum of digits (25), we get a palindrome (2120220212).

Adding to 2120220187 its reverse (7810220212), we get a palindrome (9930440399).

The spelling of 2120220187 in words is "two billion, one hundred twenty million, two hundred twenty thousand, one hundred eighty-seven".