22022120012021 has 8 divisors (see below), whose sum is σ = 22327361162904. Its totient is φ = 21716975301120.

The previous prime is 22022120011993. The next prime is 22022120012047. The reversal of 22022120012021 is 12021002122022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13351533300625 + 8670586711396 = 3653975^2 + 2944586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22022120012021 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 (22022120012051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23650070 + ... + 24563591.

It is an arithmetic number, because the mean of its divisors is an integer number (2790920145363).

Almost surely, 2^{22022120012021} is an apocalyptic number.

It is an amenable number.

22022120012021 is a deficient number, since it is larger than the sum of its proper divisors (305241150883).

22022120012021 is an equidigital number, since it uses as much as digits as its factorization.

22022120012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48219991.

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

Adding to 22022120012021 its reverse (12021002122022), we get a palindrome (34043122134043).

The spelling of 22022120012021 in words is "twenty-two trillion, twenty-two billion, one hundred twenty million, twelve thousand, twenty-one".