22142404400421 has 32 divisors (see below), whose sum is σ = 31137338769408. Its totient is φ = 13975477686720.

The previous prime is 22142404400419. The next prime is 22142404400447. The reversal of 22142404400421 is 12400440424122.

It is not a de Polignac number, because 22142404400421 - 2¹ = 22142404400419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142404400461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9111870 + ... + 11283216.

It is an arithmetic number, because the mean of its divisors is an integer number (973041836544).

Almost surely, 2^{22142404400421} is an apocalyptic number.

It is an amenable number.

22142404400421 is a deficient number, since it is larger than the sum of its proper divisors (8994934368987).

22142404400421 is a wasteful number, since it uses less digits than its factorization.

22142404400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173761.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 22142404400421 its reverse (12400440424122), we get a palindrome (34542844824543).

The spelling of 22142404400421 in words is "twenty-two trillion, one hundred forty-two billion, four hundred four million, four hundred thousand, four hundred twenty-one".