220211122021111 has 16 divisors (see below), whose sum is σ = 241626296388960. Its totient is φ = 199435397765760.

The previous prime is 220211122021109. The next prime is 220211122021157. The reversal of 220211122021111 is 111120221112022.

It is a happy number.

It is not a de Polignac number, because 220211122021111 - 2¹ = 220211122021109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211122021171) 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, 142286716 + ... + 143826046.

It is an arithmetic number, because the mean of its divisors is an integer number (15101643524310).

Almost surely, 2^{220211122021111} is an apocalyptic number.

220211122021111 is a deficient number, since it is larger than the sum of its proper divisors (21415174367849).

220211122021111 is a wasteful number, since it uses less digits than its factorization.

220211122021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747026.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 220211122021111 its reverse (111120221112022), we get a palindrome (331331343133133).

The spelling of 220211122021111 in words is "two hundred twenty trillion, two hundred eleven billion, one hundred twenty-two million, twenty-one thousand, one hundred eleven".