1222665143 has 48 divisors (see below), whose sum is σ = 1615461120. Its totient is φ = 900813312.

The previous prime is 1222665091. The next prime is 1222665149. The reversal of 1222665143 is 3415662221.

It is not a de Polignac number, because 1222665143 - 2⁸ = 1222664887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222665149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1901180 + ... + 1901822.

It is an arithmetic number, because the mean of its divisors is an integer number (33655440).

Almost surely, 2^1222665143 is an apocalyptic number.

1222665143 is a deficient number, since it is larger than the sum of its proper divisors (392795977).

1222665143 is a wasteful number, since it uses less digits than its factorization.

1222665143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 715 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 1222665143 is about 34966.6289910823. The cubic root of 1222665143 is about 1069.3072474551.

The spelling of 1222665143 in words is "one billion, two hundred twenty-two million, six hundred sixty-five thousand, one hundred forty-three".