22011221020051 has 2 divisors, whose sum is σ = 22011221020052. Its totient is φ = 22011221020050.

The previous prime is 22011221020039. The next prime is 22011221020121. The reversal of 22011221020051 is 15002012211022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22011221020051 - 2¹⁹ = 22011220495763 is a prime.

It is not a weakly prime, because it can be changed into another prime (22011221020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005610510025 + 11005610510026.

It is an arithmetic number, because the mean of its divisors is an integer number (11005610510026).

Almost surely, 2^{22011221020051} is an apocalyptic number.

22011221020051 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011221020051 is an equidigital number, since it uses as much as digits as its factorization.

22011221020051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 22011221020051 its reverse (15002012211022), we get a palindrome (37013233231073).

The spelling of 22011221020051 in words is "twenty-two trillion, eleven billion, two hundred twenty-one million, twenty thousand, fifty-one".