20011222110111 has 8 divisors (see below), whose sum is σ = 26762238633984. Its totient is φ = 13300510163160.

The previous prime is 20011222110107. The next prime is 20011222110119. The reversal of 20011222110111 is 11101122211002.

It is a happy number.

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

It is not a de Polignac number, because 20011222110111 - 2² = 20011222110107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011222110119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10076143071 + ... + 10076145056.

It is an arithmetic number, because the mean of its divisors is an integer number (3345279829248).

Almost surely, 2^{20011222110111} is an apocalyptic number.

20011222110111 is a deficient number, since it is larger than the sum of its proper divisors (6751016523873).

20011222110111 is a wasteful number, since it uses less digits than its factorization.

20011222110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20152288461.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20011222110111 its reverse (11101122211002), we get a palindrome (31112344321113).

The spelling of 20011222110111 in words is "twenty trillion, eleven billion, two hundred twenty-two million, one hundred ten thousand, one hundred eleven".