20022222011 has 4 divisors (see below), whose sum is σ = 21842424024. Its totient is φ = 18202020000.

The previous prime is 20022222007. The next prime is 20022222041. The reversal of 20022222011 is 11022222002.

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

It is a cyclic number.

It is not a de Polignac number, because 20022222011 - 2² = 20022222007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022222041) 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, 910100990 + ... + 910101011.

It is an arithmetic number, because the mean of its divisors is an integer number (5460606006).

Almost surely, 2^20022222011 is an apocalyptic number.

20022222011 is a deficient number, since it is larger than the sum of its proper divisors (1820202013).

20022222011 is a wasteful number, since it uses less digits than its factorization.

20022222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820202012.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20022222011 its reverse (11022222002), we get a palindrome (31044444013).

Subtracting from 20022222011 its reverse (11022222002), we obtain a palindrome (9000000009).

The spelling of 20022222011 in words is "twenty billion, twenty-two million, two hundred twenty-two thousand, eleven".