22567045421 has 4 divisors (see below), whose sum is σ = 22567432092. Its totient is φ = 22566658752.

The previous prime is 22567045367. The next prime is 22567045477. The reversal of 22567045421 is 12454076522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12454076522 = 2 ⋅6227038261.

It can be written as a sum of positive squares in 2 ways, for example, as 1312612900 + 21254432521 = 36230^2 + 145789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22567045421 is a prime.

It is a super-4 number, since 4×22567045421⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22567045621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85886 + ... + 229151.

It is an arithmetic number, because the mean of its divisors is an integer number (5641858023).

Almost surely, 2^22567045421 is an apocalyptic number.

It is an amenable number.

22567045421 is a deficient number, since it is larger than the sum of its proper divisors (386671).

22567045421 is an equidigital number, since it uses as much as digits as its factorization.

22567045421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386670.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 22567045421 in words is "twenty-two billion, five hundred sixty-seven million, forty-five thousand, four hundred twenty-one".