220111101011 has 4 divisors (see below), whose sum is σ = 221327184624. Its totient is φ = 218895017400.

The previous prime is 220111100983. The next prime is 220111101031. The reversal of 220111101011 is 110101111022.

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 220111101011 - 2¹⁰ = 220111099987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111100983 and 220111101001.

It is not an unprimeable number, because it can be changed into a prime (220111101031) 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, 608041535 + ... + 608041896.

It is an arithmetic number, because the mean of its divisors is an integer number (55331796156).

Almost surely, 2^220111101011 is an apocalyptic number.

220111101011 is a deficient number, since it is larger than the sum of its proper divisors (1216083613).

220111101011 is a wasteful number, since it uses less digits than its factorization.

220111101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216083612.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 220111101011 its reverse (110101111022), we get a palindrome (330212212033).

The spelling of 220111101011 in words is "two hundred twenty billion, one hundred eleven million, one hundred one thousand, eleven".