4012222091 has 2 divisors, whose sum is σ = 4012222092. Its totient is φ = 4012222090.

The previous prime is 4012222079. The next prime is 4012222111. The reversal of 4012222091 is 1902222104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4012222091 - 2¹⁰ = 4012221067 is a prime.

It is a super-2 number, since 2×4012222091² = 32195852215016824562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4012252091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006111045 + 2006111046.

It is an arithmetic number, because the mean of its divisors is an integer number (2006111046).

Almost surely, 2^4012222091 is an apocalyptic number.

4012222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012222091 is an equidigital number, since it uses as much as digits as its factorization.

4012222091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 4012222091 is about 63342.1036199462. The cubic root of 4012222091 is about 1589.0161880643.

Adding to 4012222091 its reverse (1902222104), we get a palindrome (5914444195).

The spelling of 4012222091 in words is "four billion, twelve million, two hundred twenty-two thousand, ninety-one".