1222020300 has 72 divisors (see below), whose sum is σ = 3548995072. Its totient is φ = 324648000.

The previous prime is 1222020287. The next prime is 1222020379. The reversal of 1222020300 is 30202221.

It is a super-2 number, since 2×1222020300² = 2986667227224180000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73785 + ... + 88815.

Almost surely, 2^1222020300 is an apocalyptic number.

1222020300 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 1222020300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774497536).

1222020300 is an abundant number, since it is smaller than the sum of its proper divisors (2326974772).

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

1222020300 is a wasteful number, since it uses less digits than its factorization.

1222020300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15319 (or 15312 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1222020300 is about 34957.4069404468. The cubic root of 1222020300 is about 1069.1192274413.

Adding to 1222020300 its reverse (30202221), we get a palindrome (1252222521).

The spelling of 1222020300 in words is "one billion, two hundred twenty-two million, twenty thousand, three hundred".