1222442651 has 4 divisors (see below), whose sum is σ = 1222586904. Its totient is φ = 1222298400.

The previous prime is 1222442621. The next prime is 1222442699. The reversal of 1222442651 is 1562442221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222442651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222442621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58565 + ... + 76646.

It is an arithmetic number, because the mean of its divisors is an integer number (305646726).

Almost surely, 2^1222442651 is an apocalyptic number.

1222442651 is a deficient number, since it is larger than the sum of its proper divisors (144253).

1222442651 is an equidigital number, since it uses as much as digits as its factorization.

1222442651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144252.

The product of its digits is 7680, while the sum is 29.

The square root of 1222442651 is about 34963.4473557743. The cubic root of 1222442651 is about 1069.2423818506.

Adding to 1222442651 its reverse (1562442221), we get a palindrome (2784884872).

The spelling of 1222442651 in words is "one billion, two hundred twenty-two million, four hundred forty-two thousand, six hundred fifty-one".