1222225700 has 18 divisors (see below), whose sum is σ = 2652229986. Its totient is φ = 488890240.

The previous prime is 1222225691. The next prime is 1222225709. The reversal of 1222225700 is 75222221.

It is an interprime number because it is at equal distance from previous prime (1222225691) and next prime (1222225709).

It can be written as a sum of positive squares in 3 ways, for example, as 102252544 + 1119973156 = 10112^2 + 33466^2 .

It is not an unprimeable number, because it can be changed into a prime (1222225709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6111029 + ... + 6111228.

Almost surely, 2^1222225700 is an apocalyptic number.

1222225700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222225700 is an abundant number, since it is smaller than the sum of its proper divisors (1430004286).

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

1222225700 is a wasteful number, since it uses less digits than its factorization.

1222225700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12222271 (or 12222264 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1222225700 is about 34960.3446779347. The cubic root of 1222225700 is about 1069.1791240969.

Adding to 1222225700 its reverse (75222221), we get a palindrome (1297447921).

The spelling of 1222225700 in words is "one billion, two hundred twenty-two million, two hundred twenty-five thousand, seven hundred".