2222001122021 has 6 divisors (see below), whose sum is σ = 2253737703366. Its totient is φ = 2190705326600.

The previous prime is 2222001121871. The next prime is 2222001122119. The reversal of 2222001122021 is 1202211002222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2125513231396 + 96487890625 = 1457914^2 + 310625^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2222001122021 is a prime.

It is a super-2 number, since 2×2222001122021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222001122321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 220387850 + ... + 220397931.

It is an arithmetic number, because the mean of its divisors is an integer number (375622950561).

Almost surely, 2^{2222001122021} is an apocalyptic number.

It is an amenable number.

2222001122021 is a deficient number, since it is larger than the sum of its proper divisors (31736581345).

2222001122021 is an frugal number, since it uses more digits than its factorization.

2222001122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440785923 (or 440785852 counting only the distinct ones).

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

Adding to 2222001122021 its reverse (1202211002222), we get a palindrome (3424212124243).

The spelling of 2222001122021 in words is "two trillion, two hundred twenty-two billion, one million, one hundred twenty-two thousand, twenty-one".