2022111111221 has 4 divisors (see below), whose sum is σ = 2022114162444. Its totient is φ = 2022108060000.

The previous prime is 2022111111217. The next prime is 2022111111253. The reversal of 2022111111221 is 1221111112202.

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 598418280625 + 1423692830596 = 773575^2 + 1193186^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022111111221 - 2² = 2022111111217 is a prime.

It is a super-2 number, since 2×2022111111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2022111111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022111119221) 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, 66110 + ... + 2012111.

It is an arithmetic number, because the mean of its divisors is an integer number (505528540611).

Almost surely, 2^{2022111111221} is an apocalyptic number.

It is an amenable number.

2022111111221 is a deficient number, since it is larger than the sum of its proper divisors (3051223).

2022111111221 is an equidigital number, since it uses as much as digits as its factorization.

2022111111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051222.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2022111111221 its reverse (1221111112202), we get a palindrome (3243222223423).

The spelling of 2022111111221 in words is "two trillion, twenty-two billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-one".