1222033100 has 72 divisors (see below), whose sum is σ = 2849973840. Its totient is φ = 453150720.

The previous prime is 1222033061. The next prime is 1222033129. The reversal of 1222033100 is 13302221.

It is a happy number.

It is a super-2 number, since 2×1222033100² = 2986729794991220000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108536 + ... + 119264.

It is an arithmetic number, because the mean of its divisors is an integer number (39582970).

Almost surely, 2^1222033100 is an apocalyptic number.

1222033100 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 1222033100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424986920).

1222033100 is an abundant number, since it is smaller than the sum of its proper divisors (1627940740).

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

1222033100 is a wasteful number, since it uses less digits than its factorization.

1222033100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10827 (or 10820 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1222033100 is about 34957.5900199084. The cubic root of 1222033100 is about 1069.1229602430.

Adding to 1222033100 its reverse (13302221), we get a palindrome (1235335321).

The spelling of 1222033100 in words is "one billion, two hundred twenty-two million, thirty-three thousand, one hundred".