220211011121111 has 4 divisors (see below), whose sum is σ = 220567917136512. Its totient is φ = 219854105105712.

The previous prime is 220211011121083. The next prime is 220211011121281. The reversal of 220211011121111 is 111121110112022.

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 220211011121111 - 2¹⁸ = 220211010858967 is a prime.

It is a super-3 number, since 3×220211011121111³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220211011121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211011151111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178453006775 + ... + 178453008008.

It is an arithmetic number, because the mean of its divisors is an integer number (55141979284128).

Almost surely, 2^{220211011121111} is an apocalyptic number.

220211011121111 is a deficient number, since it is larger than the sum of its proper divisors (356906015401).

220211011121111 is an equidigital number, since it uses as much as digits as its factorization.

220211011121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356906015400.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 220211011121111 its reverse (111121110112022), we get a palindrome (331332121233133).

The spelling of 220211011121111 in words is "two hundred twenty trillion, two hundred eleven billion, eleven million, one hundred twenty-one thousand, one hundred eleven".