220110011021 has 4 divisors (see below), whose sum is σ = 220500970752. Its totient is φ = 219719051292.

The previous prime is 220110011003. The next prime is 220110011041. The reversal of 220110011021 is 120110011022.

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 220110011021 - 2⁶ = 220110010957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220110010993 and 220110011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220110011041) 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, 195479021 + ... + 195480146.

It is an arithmetic number, because the mean of its divisors is an integer number (55125242688).

Almost surely, 2^220110011021 is an apocalyptic number.

It is an amenable number.

220110011021 is a deficient number, since it is larger than the sum of its proper divisors (390959731).

220110011021 is an equidigital number, since it uses as much as digits as its factorization.

220110011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390959730.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 220110011021 its reverse (120110011022), we get a palindrome (340220022043).

Subtracting from 220110011021 its reverse (120110011022), we obtain a palindrome (99999999999).

The spelling of 220110011021 in words is "two hundred twenty billion, one hundred ten million, eleven thousand, twenty-one".