220001111121 has 32 divisors (see below), whose sum is σ = 323986455936. Its totient is φ = 132780172800.

The previous prime is 220001111107. The next prime is 220001111153. The reversal of 220001111121 is 121111100022.

It is not a de Polignac number, because 220001111121 - 2¹⁴ = 220001094737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220001111097 and 220001111106.

It is not an unprimeable number, because it can be changed into a prime (220001111521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 848005 + ... + 1076621.

It is an arithmetic number, because the mean of its divisors is an integer number (10124576748).

Almost surely, 2^220001111121 is an apocalyptic number.

It is an amenable number.

220001111121 is a deficient number, since it is larger than the sum of its proper divisors (103985344815).

220001111121 is a wasteful number, since it uses less digits than its factorization.

220001111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228894 (or 228872 counting only the distinct ones).

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

Adding to 220001111121 its reverse (121111100022), we get a palindrome (341112211143).

The spelling of 220001111121 in words is "two hundred twenty billion, one million, one hundred eleven thousand, one hundred twenty-one".