2021222122331 has 4 divisors (see below), whose sum is σ = 2021306826000. Its totient is φ = 2021137418664.

The previous prime is 2021222122277. The next prime is 2021222122363. The reversal of 2021222122331 is 1332212221202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021222122331 is a prime.

It is a super-2 number, since 2×2021222122331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021222122297 and 2021222122306.

It is not an unprimeable number, because it can be changed into a prime (2021222122831) 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, 42316031 + ... + 42363768.

It is an arithmetic number, because the mean of its divisors is an integer number (505326706500).

Almost surely, 2^{2021222122331} is an apocalyptic number.

2021222122331 is a deficient number, since it is larger than the sum of its proper divisors (84703669).

2021222122331 is an equidigital number, since it uses as much as digits as its factorization.

2021222122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84703668.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2021222122331 its reverse (1332212221202), we get a palindrome (3353434343533).

The spelling of 2021222122331 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, three hundred thirty-one".