1212220300 has 36 divisors (see below), whose sum is σ = 2721232080. Its totient is φ = 468166720.

The previous prime is 1212220291. The next prime is 1212220301. The reversal of 1212220300 is 30222121.

It is not an unprimeable number, because it can be changed into a prime (1212220301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206104 + ... + 211903.

It is an arithmetic number, because the mean of its divisors is an integer number (75589780).

Almost surely, 2^1212220300 is an apocalyptic number.

1212220300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212220300 is an abundant number, since it is smaller than the sum of its proper divisors (1509011780).

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

1212220300 is a wasteful number, since it uses less digits than its factorization.

1212220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418050 (or 418043 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1212220300 is about 34816.9542033763. The cubic root of 1212220300 is about 1066.2536172006.

Adding to 1212220300 its reverse (30222121), we get a palindrome (1242442421).

The spelling of 1212220300 in words is "one billion, two hundred twelve million, two hundred twenty thousand, three hundred".