11221401400 has 96 divisors (see below), whose sum is σ = 28928483280. Its totient is φ = 4013568000.

The previous prime is 11221401383. The next prime is 11221401409. The reversal of 11221401400 is 410412211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221401409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92392 + ... + 176008.

Almost surely, 2^11221401400 is an apocalyptic number.

11221401400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221401400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14464241640).

11221401400 is an abundant number, since it is smaller than the sum of its proper divisors (17707081880).

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

11221401400 is a wasteful number, since it uses less digits than its factorization.

11221401400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83705 (or 83696 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11221401400 its reverse (410412211), we get a palindrome (11631813611).

The spelling of 11221401400 in words is "eleven billion, two hundred twenty-one million, four hundred one thousand, four hundred".