1421144421100 has 18 divisors (see below), whose sum is σ = 3083883394004. Its totient is φ = 568457768400.

The previous prime is 1421144421083. The next prime is 1421144421127. The reversal of 1421144421100 is 11244411241.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7105722006 + ... + 7105722205.

Almost surely, 2^{1421144421100} is an apocalyptic number.

1421144421100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421144421100 is an abundant number, since it is smaller than the sum of its proper divisors (1662738972904).

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

1421144421100 is a wasteful number, since it uses less digits than its factorization.

1421144421100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14211444225 (or 14211444218 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 1421144421100 its reverse (11244411241), we get a palindrome (1432388832341).

The spelling of 1421144421100 in words is "one trillion, four hundred twenty-one billion, one hundred forty-four million, four hundred twenty-one thousand, one hundred".