110211220021 has 4 divisors (see below), whose sum is σ = 125955680032. Its totient is φ = 94466760012.

The previous prime is 110211220019. The next prime is 110211220033. The reversal of 110211220021 is 120022112011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120022112011 = 191 ⋅628388021.

It is a cyclic number.

It is not a de Polignac number, because 110211220021 - 2¹ = 110211220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110211219983 and 110211220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110211260021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7872229995 + ... + 7872230008.

It is an arithmetic number, because the mean of its divisors is an integer number (31488920008).

Almost surely, 2^110211220021 is an apocalyptic number.

It is an amenable number.

110211220021 is a deficient number, since it is larger than the sum of its proper divisors (15744460011).

110211220021 is an equidigital number, since it uses as much as digits as its factorization.

110211220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15744460010.

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

Adding to 110211220021 its reverse (120022112011), we get a palindrome (230233332032).

The spelling of 110211220021 in words is "one hundred ten billion, two hundred eleven million, two hundred twenty thousand, twenty-one".