20022211111 has 8 divisors (see below), whose sum is σ = 22883710464. Its totient is φ = 17161007640.

The previous prime is 20022211093. The next prime is 20022211129. The reversal of 20022211111 is 11111222002.

It is an interprime number because it is at equal distance from previous prime (20022211093) and next prime (20022211129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20022211111 - 2³¹ = 17874727463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022211091 and 20022211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022211141) 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 in 7 ways as a sum of consecutive naturals, for example, 97566 + ... + 222628.

It is an arithmetic number, because the mean of its divisors is an integer number (2860463808).

Almost surely, 2^20022211111 is an apocalyptic number.

20022211111 is a deficient number, since it is larger than the sum of its proper divisors (2861499353).

20022211111 is a wasteful number, since it uses less digits than its factorization.

20022211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147941.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20022211111 its reverse (11111222002), we get a palindrome (31133433113).

The spelling of 20022211111 in words is "twenty billion, twenty-two million, two hundred eleven thousand, one hundred eleven".