1222242351 has 16 divisors (see below), whose sum is σ = 1802850048. Its totient is φ = 730318400.

The previous prime is 1222242347. The next prime is 1222242361. The reversal of 1222242351 is 1532422221.

It is a cyclic number.

It is not a de Polignac number, because 1222242351 - 2² = 1222242347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222242311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258486 + ... + 263171.

It is an arithmetic number, because the mean of its divisors is an integer number (112678128).

Almost surely, 2^1222242351 is an apocalyptic number.

1222242351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222242351 is a deficient number, since it is larger than the sum of its proper divisors (580607697).

1222242351 is a wasteful number, since it uses less digits than its factorization.

1222242351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521742.

The product of its digits is 1920, while the sum is 24.

The square root of 1222242351 is about 34960.5828183685. The cubic root of 1222242351 is about 1069.1839793978.

Adding to 1222242351 its reverse (1532422221), we get a palindrome (2754664572).

The spelling of 1222242351 in words is "one billion, two hundred twenty-two million, two hundred forty-two thousand, three hundred fifty-one".