1211104400 has 60 divisors (see below), whose sum is σ = 3174206064. Its totient is φ = 440400000.

The previous prime is 1211104379. The next prime is 1211104457. The reversal of 1211104400 is 44011121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133226 + ... + 142025.

Almost surely, 2^1211104400 is an apocalyptic number.

1211104400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211104400 is an abundant number, since it is smaller than the sum of its proper divisors (1963101664).

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

1211104400 is a wasteful number, since it uses less digits than its factorization.

1211104400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275280 (or 275269 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211104400 is about 34800.9252750555. The cubic root of 1211104400 is about 1065.9263395886.

Adding to 1211104400 its reverse (44011121), we get a palindrome (1255115521).

The spelling of 1211104400 in words is "one billion, two hundred eleven million, one hundred four thousand, four hundred".