220100011021 has 4 divisors (see below), whose sum is σ = 240109102944. Its totient is φ = 200090919100.

The previous prime is 220100011013. The next prime is 220100011049. The reversal of 220100011021 is 120110001022.

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 220100011021 - 2³ = 220100011013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220100010989 and 220100011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220100011051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10004545945 + ... + 10004545966.

It is an arithmetic number, because the mean of its divisors is an integer number (60027275736).

Almost surely, 2^220100011021 is an apocalyptic number.

It is an amenable number.

220100011021 is a deficient number, since it is larger than the sum of its proper divisors (20009091923).

220100011021 is a wasteful number, since it uses less digits than its factorization.

220100011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20009091922.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 220100011021 its reverse (120110001022), we get a palindrome (340210012043).

Subtracting from 220100011021 its reverse (120110001022), we obtain a palindrome (99990009999).

It can be divided in two parts, 22010001 and 1021, that added together give a palindrome (22011022).

The spelling of 220100011021 in words is "two hundred twenty billion, one hundred million, eleven thousand, twenty-one".