22001231541 has 4 divisors (see below), whose sum is σ = 29334975392. Its totient is φ = 14667487692.

The previous prime is 22001231503. The next prime is 22001231543. The reversal of 22001231541 is 14513210022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22001231541 - 2⁹ = 22001231029 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 (22001231543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666871921 + ... + 3666871926.

It is an arithmetic number, because the mean of its divisors is an integer number (7333743848).

Almost surely, 2^22001231541 is an apocalyptic number.

It is an amenable number.

22001231541 is a deficient number, since it is larger than the sum of its proper divisors (7333743851).

22001231541 is an equidigital number, since it uses as much as digits as its factorization.

22001231541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333743850.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 22001231541 its reverse (14513210022), we get a palindrome (36514441563).

The spelling of 22001231541 in words is "twenty-two billion, one million, two hundred thirty-one thousand, five hundred forty-one".