11211231400 has 48 divisors (see below), whose sum is σ = 27599422140. Its totient is φ = 4220697600.

The previous prime is 11211231379. The next prime is 11211231439. The reversal of 11211231400 is 413211211.

It can be written as a sum of positive squares in 6 ways, for example, as 6224894404 + 4986336996 = 78898^2 + 70614^2 .

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, 1645311 + ... + 1652110.

Almost surely, 2^11211231400 is an apocalyptic number.

11211231400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211231400 is an abundant number, since it is smaller than the sum of its proper divisors (16388190740).

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

11211231400 is a wasteful number, since it uses less digits than its factorization.

11211231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297454 (or 3297445 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11211231400 its reverse (413211211), we get a palindrome (11624442611).

The spelling of 11211231400 in words is "eleven billion, two hundred eleven million, two hundred thirty-one thousand, four hundred".