20022012111 has 4 divisors (see below), whose sum is σ = 26696016152. Its totient is φ = 13348008072.

The previous prime is 20022012047. The next prime is 20022012137. The reversal of 20022012111 is 11121022002.

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

It is not a de Polignac number, because 20022012111 - 2⁶ = 20022012047 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 (20022012511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3337002016 + ... + 3337002021.

It is an arithmetic number, because the mean of its divisors is an integer number (6674004038).

Almost surely, 2^20022012111 is an apocalyptic number.

20022012111 is a deficient number, since it is larger than the sum of its proper divisors (6674004041).

20022012111 is an equidigital number, since it uses as much as digits as its factorization.

20022012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674004040.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20022012111 its reverse (11121022002), we get a palindrome (31143034113).

The spelling of 20022012111 in words is "twenty billion, twenty-two million, twelve thousand, one hundred eleven".