110020111111021 has 4 divisors (see below), whose sum is σ = 113569146953344. Its totient is φ = 106471075268700.

The previous prime is 110020111110997. The next prime is 110020111111039. The reversal of 110020111111021 is 120111111020011.

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 110020111111021 - 2¹⁵ = 110020111078253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110020111110992 and 110020111111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110020111111061) 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, 1774517921115 + ... + 1774517921176.

It is an arithmetic number, because the mean of its divisors is an integer number (28392286738336).

Almost surely, 2^{110020111111021} is an apocalyptic number.

It is an amenable number.

110020111111021 is a deficient number, since it is larger than the sum of its proper divisors (3549035842323).

110020111111021 is an equidigital number, since it uses as much as digits as its factorization.

110020111111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549035842322.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110020111111021 its reverse (120111111020011), we get a palindrome (230131222131032).

The spelling of 110020111111021 in words is "one hundred ten trillion, twenty billion, one hundred eleven million, one hundred eleven thousand, twenty-one".