220110112100121 has 16 divisors (see below), whose sum is σ = 296231976105984. Its totient is φ = 145364244946704.

The previous prime is 220110112100107. The next prime is 220110112100129. The reversal of 220110112100121 is 121001211011022.

It is a happy number.

It is not a de Polignac number, because 220110112100121 - 2⁶ = 220110112100057 is a prime.

It is a super-2 number, since 2×220110112100121² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220110112100121.

It is not an unprimeable number, because it can be changed into a prime (220110112100129) 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, 131616 + ... + 20981838.

It is an arithmetic number, because the mean of its divisors is an integer number (18514498506624).

Almost surely, 2^{220110112100121} is an apocalyptic number.

It is an amenable number.

220110112100121 is a deficient number, since it is larger than the sum of its proper divisors (76121864005863).

220110112100121 is a wasteful number, since it uses less digits than its factorization.

220110112100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20883220.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 220110112100121 its reverse (121001211011022), we get a palindrome (341111323111143).

The spelling of 220110112100121 in words is "two hundred twenty trillion, one hundred ten billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".