1204022100 has 36 divisors (see below), whose sum is σ = 3483638144. Its totient is φ = 321072480.

The previous prime is 1204021999. The next prime is 1204022117. The reversal of 1204022100 is 12204021.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2006404 + ... + 2007003.

Almost surely, 2^1204022100 is an apocalyptic number.

1204022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204022100 is an abundant number, since it is smaller than the sum of its proper divisors (2279616044).

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

1204022100 is a wasteful number, since it uses less digits than its factorization.

1204022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013424 (or 4013417 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1204022100 is about 34699.0216000394. The cubic root of 1204022100 is about 1063.8445004725.

Adding to 1204022100 its reverse (12204021), we get a palindrome (1216226121).

The spelling of 1204022100 in words is "one billion, two hundred four million, twenty-two thousand, one hundred".