22022021102021 has 4 divisors (see below), whose sum is σ = 22023351513132. Its totient is φ = 22020690690912.

The previous prime is 22022021101987. The next prime is 22022021102069. The reversal of 22022021102021 is 12020112022022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10258760584900 + 11763260517121 = 3202930^2 + 3429761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22022021102021 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 (22022021102071) 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, 665180726 + ... + 665213831.

It is an arithmetic number, because the mean of its divisors is an integer number (5505837878283).

Almost surely, 2^{22022021102021} is an apocalyptic number.

It is an amenable number.

22022021102021 is a deficient number, since it is larger than the sum of its proper divisors (1330411111).

22022021102021 is a wasteful number, since it uses less digits than its factorization.

22022021102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330411110.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22022021102021 its reverse (12020112022022), we get a palindrome (34042133124043).

The spelling of 22022021102021 in words is "twenty-two trillion, twenty-two billion, twenty-one million, one hundred two thousand, twenty-one".