1212203104 has 24 divisors (see below), whose sum is σ = 2727457488. Its totient is φ = 519515520.

The previous prime is 1212203101. The next prime is 1212203117. The reversal of 1212203104 is 4013022121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212203101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705587 + ... + 2706034.

It is an arithmetic number, because the mean of its divisors is an integer number (113644062).

Almost surely, 2^1212203104 is an apocalyptic number.

1212203104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1212203104 is an abundant number, since it is smaller than the sum of its proper divisors (1515254384).

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

1212203104 is an equidigital number, since it uses as much as digits as its factorization.

1212203104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411638 (or 5411630 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1212203104 is about 34816.7072538458. The cubic root of 1212203104 is about 1066.2485753822.

Adding to 1212203104 its reverse (4013022121), we get a palindrome (5225225225).

The spelling of 1212203104 in words is "one billion, two hundred twelve million, two hundred three thousand, one hundred four".