2120216051 has 2 divisors, whose sum is σ = 2120216052. Its totient is φ = 2120216050.

The previous prime is 2120216041. The next prime is 2120216089. The reversal of 2120216051 is 1506120212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120216051 is a prime.

It is a super-2 number, since 2×2120216051² = 8990632205836069202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2120216011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060108025 + 1060108026.

It is an arithmetic number, because the mean of its divisors is an integer number (1060108026).

Almost surely, 2^2120216051 is an apocalyptic number.

2120216051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120216051 is an equidigital number, since it uses as much as digits as its factorization.

2120216051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2120216051 is about 46045.8038370490. The cubic root of 2120216051 is about 1284.6752955311.

Adding to 2120216051 its reverse (1506120212), we get a palindrome (3626336263).

The spelling of 2120216051 in words is "two billion, one hundred twenty million, two hundred sixteen thousand, fifty-one".