1212201300 has 72 divisors (see below), whose sum is σ = 3511580800. Its totient is φ = 322859520.

The previous prime is 1212201283. The next prime is 1212201301. The reversal of 1212201300 is 31022121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309756 + ... + 313644.

Almost surely, 2^1212201300 is an apocalyptic number.

1212201300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212201300 is an abundant number, since it is smaller than the sum of its proper divisors (2299379500).

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

1212201300 is a wasteful number, since it uses less digits than its factorization.

1212201300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945 (or 4938 counting only the distinct ones).

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

The square root of 1212201300 is about 34816.6813467338. The cubic root of 1212201300 is about 1066.2480464518.

Adding to 1212201300 its reverse (31022121), we get a palindrome (1243223421).

The spelling of 1212201300 in words is "one billion, two hundred twelve million, two hundred one thousand, three hundred".