220221221200111 has 4 divisors (see below), whose sum is σ = 220221251110224. Its totient is φ = 220221191290000.

The previous prime is 220221221200093. The next prime is 220221221200129. The reversal of 220221221200111 is 111002122122022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (220221221200093) and next prime (220221221200129).

It is a cyclic number.

It is not a de Polignac number, because 220221221200111 - 2⁹ = 220221221199599 is a prime.

It is a super-2 number, since 2×220221221200111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221221200711) 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, 4698486 + ... + 21506236.

It is an arithmetic number, because the mean of its divisors is an integer number (55055312777556).

Almost surely, 2^{220221221200111} is an apocalyptic number.

220221221200111 is a deficient number, since it is larger than the sum of its proper divisors (29910113).

220221221200111 is a wasteful number, since it uses less digits than its factorization.

220221221200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29910112.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220221221200111 its reverse (111002122122022), we get a palindrome (331223343322133).

The spelling of 220221221200111 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred thousand, one hundred eleven".