220111011012121 has 4 divisors (see below), whose sum is σ = 220119827114752. Its totient is φ = 220102194909492.

The previous prime is 220111011012119. The next prime is 220111011012163. The reversal of 220111011012121 is 121210110111022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220111011012121 - 2¹ = 220111011012119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111011012095 and 220111011012104.

It is not an unprimeable number, because it can be changed into a prime (220111051012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4408013865 + ... + 4408063798.

It is an arithmetic number, because the mean of its divisors is an integer number (55029956778688).

Almost surely, 2^{220111011012121} is an apocalyptic number.

It is an amenable number.

220111011012121 is a deficient number, since it is larger than the sum of its proper divisors (8816102631).

220111011012121 is an equidigital number, since it uses as much as digits as its factorization.

220111011012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816102630.

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

Adding to 220111011012121 its reverse (121210110111022), we get a palindrome (341321121123143).

The spelling of 220111011012121 in words is "two hundred twenty trillion, one hundred eleven billion, eleven million, twelve thousand, one hundred twenty-one".