1222947000 has 288 divisors, whose sum is σ = 4547546640. Its totient is φ = 296208000.

The previous prime is 1222946999. The next prime is 1222947001. The reversal of 1222947000 is 7492221.

It is an interprime number because it is at equal distance from previous prime (1222946999) and next prime (1222947001).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222947001) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 1088439 + ... + 1089561.

Almost surely, 2^1222947000 is an apocalyptic number.

1222947000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222947000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2273773320).

1222947000 is an abundant number, since it is smaller than the sum of its proper divisors (3324599640).

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

1222947000 is a wasteful number, since it uses less digits than its factorization.

1222947000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1222947000 is about 34970.6591301908. The cubic root of 1222947000 is about 1069.3894091104.

The spelling of 1222947000 in words is "one billion, two hundred twenty-two million, nine hundred forty-seven thousand".