22140354541 has 4 divisors (see below), whose sum is σ = 22211090812. Its totient is φ = 22069618272.

The previous prime is 22140354539. The next prime is 22140354547. The reversal of 22140354541 is 14545304122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14545304122 = 2 ⋅7272652061.

It can be written as a sum of positive squares in 2 ways, for example, as 440118441 + 21700236100 = 20979^2 + 147310^2 .

It is a cyclic number.

It is not a de Polignac number, because 22140354541 - 2¹ = 22140354539 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 (22140354547) 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, 35367666 + ... + 35368291.

It is an arithmetic number, because the mean of its divisors is an integer number (5552772703).

Almost surely, 2^22140354541 is an apocalyptic number.

It is an amenable number.

22140354541 is a deficient number, since it is larger than the sum of its proper divisors (70736271).

22140354541 is an equidigital number, since it uses as much as digits as its factorization.

22140354541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70736270.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 22140354541 its reverse (14545304122), we get a palindrome (36685658663).

The spelling of 22140354541 in words is "twenty-two billion, one hundred forty million, three hundred fifty-four thousand, five hundred forty-one".