220111001012221 has 16 divisors (see below), whose sum is σ = 253004203584000. Its totient is φ = 189385413649200.

The previous prime is 220111001012207. The next prime is 220111001012261. The reversal of 220111001012221 is 122210100111022.

It is a cyclic number.

It is not a de Polignac number, because 220111001012221 - 2⁹ = 220111001011709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220111001012195 and 220111001012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111001012261) 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 15 ways as a sum of consecutive naturals, for example, 510532671 + ... + 510963628.

It is an arithmetic number, because the mean of its divisors is an integer number (15812762724000).

Almost surely, 2^{220111001012221} is an apocalyptic number.

It is an amenable number.

220111001012221 is a deficient number, since it is larger than the sum of its proper divisors (32893202571779).

220111001012221 is a wasteful number, since it uses less digits than its factorization.

220111001012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021497360.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220111001012221 its reverse (122210100111022), we get a palindrome (342321101123243).

The spelling of 220111001012221 in words is "two hundred twenty trillion, one hundred eleven billion, one million, twelve thousand, two hundred twenty-one".