11421142400000 has 132 divisors (see below), whose sum is σ = 28537095680856. Its totient is φ = 4568455680000.

The previous prime is 11421142399993. The next prime is 11421142400009. The reversal of 11421142400000 is 424112411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421142400009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1415447 + ... + 4984553.

Almost surely, 2^{11421142400000} is an apocalyptic number.

11421142400000 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 11421142400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14268547840428).

11421142400000 is an abundant number, since it is smaller than the sum of its proper divisors (17115953280856).

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

11421142400000 is an frugal number, since it uses more digits than its factorization.

11421142400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569152 (or 3569114 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11421142400000 its reverse (424112411), we get a palindrome (11421566512411).

The spelling of 11421142400000 in words is "eleven trillion, four hundred twenty-one billion, one hundred forty-two million, four hundred thousand".