22303040444421 has 128 divisors (see below), whose sum is σ = 35294544875520. Its totient is φ = 12495833475840.

The previous prime is 22303040444417. The next prime is 22303040444431. The reversal of 22303040444421 is 12444404030322.

It is not a de Polignac number, because 22303040444421 - 2² = 22303040444417 is a prime.

It is a super-2 number, since 2×22303040444421² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22303040444431) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 326086095 + ... + 326154483.

It is an arithmetic number, because the mean of its divisors is an integer number (275738631840).

Almost surely, 2^{22303040444421} is an apocalyptic number.

It is an amenable number.

22303040444421 is a deficient number, since it is larger than the sum of its proper divisors (12991504431099).

22303040444421 is a wasteful number, since it uses less digits than its factorization.

22303040444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68568 (or 68546 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 22303040444421 its reverse (12444404030322), we get a palindrome (34747444474743).

The spelling of 22303040444421 in words is "twenty-two trillion, three hundred three billion, forty million, four hundred forty-four thousand, four hundred twenty-one".