220111100002021 has 16 divisors (see below), whose sum is σ = 222666124849920. Its totient is φ = 217557904495360.

The previous prime is 220111100001931. The next prime is 220111100002051. The reversal of 220111100002021 is 120200001111022.

It is a cyclic number.

It is not a de Polignac number, because 220111100002021 - 2⁹ = 220111100001509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111100001992 and 220111100002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111100002051) 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, 7935635265 + ... + 7935663001.

It is an arithmetic number, because the mean of its divisors is an integer number (13916632803120).

Almost surely, 2^{220111100002021} is an apocalyptic number.

It is an amenable number.

220111100002021 is a deficient number, since it is larger than the sum of its proper divisors (2555024847899).

220111100002021 is a wasteful number, since it uses less digits than its factorization.

220111100002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57404.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220111100002021 its reverse (120200001111022), we get a palindrome (340311101113043).

The spelling of 220111100002021 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred million, two thousand, twenty-one".