220100111121 has 16 divisors (see below), whose sum is σ = 323315379648. Its totient is φ = 132073272000.

The previous prime is 220100111093. The next prime is 220100111141. The reversal of 220100111121 is 121111001022.

It is not a de Polignac number, because 220100111121 - 2⁶ = 220100111057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220100111097 and 220100111106.

It is not an unprimeable number, because it can be changed into a prime (220100111141) 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, 33014986 + ... + 33021651.

It is an arithmetic number, because the mean of its divisors is an integer number (20207211228).

Almost surely, 2^220100111121 is an apocalyptic number.

It is an amenable number.

220100111121 is a deficient number, since it is larger than the sum of its proper divisors (103215268527).

220100111121 is a wasteful number, since it uses less digits than its factorization.

220100111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66036752.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 220100111121 its reverse (121111001022), we get a palindrome (341211112143).

It can be divided in two parts, 2201001 and 11121, that added together give a palindrome (2212122).

The spelling of 220100111121 in words is "two hundred twenty billion, one hundred million, one hundred eleven thousand, one hundred twenty-one".