1212210300 has 144 divisors (see below), whose sum is σ = 4074516992. Its totient is φ = 272505600.

The previous prime is 1212210277. The next prime is 1212210319. The reversal of 1212210300 is 30122121.

It is a super-2 number, since 2×1212210300² = 2938907622852180000, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 123369 + ... + 132831.

Almost surely, 2^1212210300 is an apocalyptic number.

1212210300 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 1212210300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2037258496).

1212210300 is an abundant number, since it is smaller than the sum of its proper divisors (2862306692).

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

1212210300 is a wasteful number, since it uses less digits than its factorization.

1212210300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548 (or 9541 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1212210300 is about 34816.8105948836. The cubic root of 1212210300 is about 1066.2506852348.

Adding to 1212210300 its reverse (30122121), we get a palindrome (1242332421).

It can be divided in two parts, 12122 and 10300, that added together give a palindrome (22422).

The spelling of 1212210300 in words is "one billion, two hundred twelve million, two hundred ten thousand, three hundred".