22343443430021 has 12 divisors (see below), whose sum is σ = 25991519334732. Its totient is φ = 19151400054528.

The previous prime is 22343443429891. The next prime is 22343443430041. The reversal of 22343443430021 is 12003434434322.

It can be written as a sum of positive squares in 2 ways, for example, as 3406054802500 + 18937388627521 = 1845550^2 + 4351711^2 .

It is not a de Polignac number, because 22343443430021 - 2¹⁰ = 22343443428997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22343443430041) 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, 6713141 + ... + 9473813.

It is an arithmetic number, because the mean of its divisors is an integer number (2165959944561).

Almost surely, 2^{22343443430021} is an apocalyptic number.

It is an amenable number.

22343443430021 is a deficient number, since it is larger than the sum of its proper divisors (3648075904711).

22343443430021 is a wasteful number, since it uses less digits than its factorization.

22343443430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925860 (or 2925853 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 22343443430021 its reverse (12003434434322), we get a palindrome (34346877864343).

The spelling of 22343443430021 in words is "twenty-two trillion, three hundred forty-three billion, four hundred forty-three million, four hundred thirty thousand, twenty-one".