2121222227 has 2 divisors, whose sum is σ = 2121222228. Its totient is φ = 2121222226.

The previous prime is 2121222193. The next prime is 2121222239. The reversal of 2121222227 is 7222221212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121222227 - 2⁶ = 2121222163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121222827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060611113 + 1060611114.

It is an arithmetic number, because the mean of its divisors is an integer number (1060611114).

Almost surely, 2^2121222227 is an apocalyptic number.

2121222227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121222227 is an equidigital number, since it uses as much as digits as its factorization.

2121222227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 23.

The square root of 2121222227 is about 46056.7283575375. The cubic root of 2121222227 is about 1284.8784831620.

Adding to 2121222227 its reverse (7222221212), we get a palindrome (9343443439).

The spelling of 2121222227 in words is "two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-seven".