1222112651 has 2 divisors, whose sum is σ = 1222112652. Its totient is φ = 1222112650.

The previous prime is 1222112621. The next prime is 1222112653. The reversal of 1222112651 is 1562112221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1562112221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222112651 - 2⁶ = 1222112587 is a prime.

Together with 1222112653, 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 (1222112653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611056325 + 611056326.

It is an arithmetic number, because the mean of its divisors is an integer number (611056326).

Almost surely, 2^1222112651 is an apocalyptic number.

1222112651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222112651 is an equidigital number, since it uses as much as digits as its factorization.

1222112651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1222112651 is about 34958.7278229629. The cubic root of 1222112651 is about 1069.1461587295.

Adding to 1222112651 its reverse (1562112221), we get a palindrome (2784224872).

The spelling of 1222112651 in words is "one billion, two hundred twenty-two million, one hundred twelve thousand, six hundred fifty-one".