1226222651 has 2 divisors, whose sum is σ = 1226222652. Its totient is φ = 1226222650.

The previous prime is 1226222623. The next prime is 1226222653. The reversal of 1226222651 is 1562226221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1226222651 - 2¹⁰ = 1226221627 is a prime.

Together with 1226222653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1226222653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613111325 + 613111326.

It is an arithmetic number, because the mean of its divisors is an integer number (613111326).

Almost surely, 2^1226222651 is an apocalyptic number.

1226222651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226222651 is an equidigital number, since it uses as much as digits as its factorization.

1226222651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 1226222651 is about 35017.4620867932. The cubic root of 1226222651 is about 1070.3433407737.

Adding to 1226222651 its reverse (1562226221), we get a palindrome (2788448872).

It can be divided in two parts, 12262226 and 51, that multiplied together give a palindrome (625373526).

The spelling of 1226222651 in words is "one billion, two hundred twenty-six million, two hundred twenty-two thousand, six hundred fifty-one".