22021135153541 has 2 divisors, whose sum is σ = 22021135153542. Its totient is φ = 22021135153540.

The previous prime is 22021135153499. The next prime is 22021135153553. The reversal of 22021135153541 is 14535153112022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18184433591041 + 3836701562500 = 4264321^2 + 1958750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021135153541 - 2¹⁰ = 22021135152517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021135153571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010567576770 + 11010567576771.

It is an arithmetic number, because the mean of its divisors is an integer number (11010567576771).

Almost surely, 2^{22021135153541} is an apocalyptic number.

It is an amenable number.

22021135153541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021135153541 is an equidigital number, since it uses as much as digits as its factorization.

22021135153541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 22021135153541 its reverse (14535153112022), we get a palindrome (36556288265563).

The spelling of 22021135153541 in words is "twenty-two trillion, twenty-one billion, one hundred thirty-five million, one hundred fifty-three thousand, five hundred forty-one".