220122121100111 has 4 divisors (see below), whose sum is σ = 220141668409224. Its totient is φ = 220102573791000.

The previous prime is 220122121100083. The next prime is 220122121100153. The reversal of 220122121100111 is 111001121221022.

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 220122121100111 - 2⁶ = 220122121100047 is a prime.

It is a super-2 number, since 2×220122121100111² (a number of 29 digits) contains 22 as substring.

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 220122121100111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122121103111) 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, 9773637665 + ... + 9773660186.

It is an arithmetic number, because the mean of its divisors is an integer number (55035417102306).

Almost surely, 2^{220122121100111} is an apocalyptic number.

220122121100111 is a deficient number, since it is larger than the sum of its proper divisors (19547309113).

220122121100111 is a wasteful number, since it uses less digits than its factorization.

220122121100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19547309112.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220122121100111 its reverse (111001121221022), we get a palindrome (331123242321133).

The spelling of 220122121100111 in words is "two hundred twenty trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred eleven".