1246222121 has 2 divisors, whose sum is σ = 1246222122. Its totient is φ = 1246222120.

The previous prime is 1246222099. The next prime is 1246222129. The reversal of 1246222121 is 1212226421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065696025 + 180526096 = 32645^2 + 13436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246222121 - 2⁶ = 1246222057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1246222129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623111060 + 623111061.

It is an arithmetic number, because the mean of its divisors is an integer number (623111061).

Almost surely, 2^1246222121 is an apocalyptic number.

It is an amenable number.

1246222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246222121 is an equidigital number, since it uses as much as digits as its factorization.

1246222121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 1246222121 is about 35301.8713526634. The cubic root of 1246222121 is about 1076.1310240731.

Adding to 1246222121 its reverse (1212226421), we get a palindrome (2458448542).

The spelling of 1246222121 in words is "one billion, two hundred forty-six million, two hundred twenty-two thousand, one hundred twenty-one".