20022122122111 has 4 divisors (see below), whose sum is σ = 20022131184912. Its totient is φ = 20022113059312.

The previous prime is 20022122122099. The next prime is 20022122122117. The reversal of 20022122122111 is 11122122122002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20022122122111 - 2¹³ = 20022122113919 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 (20022122122117) 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, 1192950 + ... + 6439516.

It is an arithmetic number, because the mean of its divisors is an integer number (5005532796228).

Almost surely, 2^{20022122122111} is an apocalyptic number.

20022122122111 is a deficient number, since it is larger than the sum of its proper divisors (9062801).

20022122122111 is an equidigital number, since it uses as much as digits as its factorization.

20022122122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9062800.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20022122122111 its reverse (11122122122002), we get a palindrome (31144244244113).

The spelling of 20022122122111 in words is "twenty trillion, twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".