2211812051 has 2 divisors, whose sum is σ = 2211812052. Its totient is φ = 2211812050.

The previous prime is 2211812041. The next prime is 2211812123. The reversal of 2211812051 is 1502181122.

2211812051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211812051 is a prime.

It is a super-2 number, since 2×2211812051² = 9784225097897653202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2211812041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105906025 + 1105906026.

It is an arithmetic number, because the mean of its divisors is an integer number (1105906026).

Almost surely, 2^2211812051 is an apocalyptic number.

2211812051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211812051 is an equidigital number, since it uses as much as digits as its factorization.

2211812051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 2211812051 is about 47029.9059216580. The cubic root of 2211812051 is about 1302.9149680042.

Adding to 2211812051 its reverse (1502181122), we get a palindrome (3713993173).

The spelling of 2211812051 in words is "two billion, two hundred eleven million, eight hundred twelve thousand, fifty-one".