1222838892 has 36 divisors (see below), whose sum is σ = 3372071976. Its totient is φ = 370557120.

The previous prime is 1222838887. The next prime is 1222838923. The reversal of 1222838892 is 2988382221.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1543593 + ... + 1544384.

It is an arithmetic number, because the mean of its divisors is an integer number (93668666).

Almost surely, 2^1222838892 is an apocalyptic number.

1222838892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222838892 is an abundant number, since it is smaller than the sum of its proper divisors (2149233084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222838892 is a wasteful number, since it uses less digits than its factorization.

1222838892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087998 (or 3087993 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1222838892 is about 34969.1134002565. The cubic root of 1222838892 is about 1069.3578969906.

The spelling of 1222838892 in words is "one billion, two hundred twenty-two million, eight hundred thirty-eight thousand, eight hundred ninety-two".