220211211122111 has 16 divisors (see below), whose sum is σ = 255377822198400. Its totient is φ = 187777810404000.

The previous prime is 220211211122059. The next prime is 220211211122137. The reversal of 220211211122111 is 111221112112022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220211211122111 - 2¹⁰ = 220211211121087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211211122611) 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, 5216029181 + ... + 5216071398.

It is an arithmetic number, because the mean of its divisors is an integer number (15961113887400).

Almost surely, 2^{220211211122111} is an apocalyptic number.

220211211122111 is a deficient number, since it is larger than the sum of its proper divisors (35166611076289).

220211211122111 is a wasteful number, since it uses less digits than its factorization.

220211211122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10432100710.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 220211211122111 its reverse (111221112112022), we get a palindrome (331432323234133).

The spelling of 220211211122111 in words is "two hundred twenty trillion, two hundred eleven billion, two hundred eleven million, one hundred twenty-two thousand, one hundred eleven".