220001211111 has 16 divisors (see below), whose sum is σ = 331036306560. Its totient is φ = 128736340320.

The previous prime is 220001211061. The next prime is 220001211211. The reversal of 220001211111 is 111112100022.

It is not a de Polignac number, because 220001211111 - 2⁷ = 220001210983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001211011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114942205 + ... + 114944118.

It is an arithmetic number, because the mean of its divisors is an integer number (20689769160).

Almost surely, 2^220001211111 is an apocalyptic number.

220001211111 is a deficient number, since it is larger than the sum of its proper divisors (111035095449).

220001211111 is a wasteful number, since it uses less digits than its factorization.

220001211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229886366.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 220001211111 its reverse (111112100022), we get a palindrome (331113311133).

The spelling of 220001211111 in words is "two hundred twenty billion, one million, two hundred eleven thousand, one hundred eleven".