22403440342421 has 16 divisors (see below), whose sum is σ = 23083766520000. Its totient is φ = 21727060437888.

The previous prime is 22403440342397. The next prime is 22403440342441. The reversal of 22403440342421 is 12424304430422.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22403440342421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22403440342441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253104830 + ... + 253193328.

It is an arithmetic number, because the mean of its divisors is an integer number (1442735407500).

Almost surely, 2^{22403440342421} is an apocalyptic number.

It is an amenable number.

22403440342421 is a deficient number, since it is larger than the sum of its proper divisors (680326177579).

22403440342421 is a wasteful number, since it uses less digits than its factorization.

22403440342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110708.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 22403440342421 its reverse (12424304430422), we get a palindrome (34827744772843).

The spelling of 22403440342421 in words is "twenty-two trillion, four hundred three billion, four hundred forty million, three hundred forty-two thousand, four hundred twenty-one".