110111201021 has 4 divisors (see below), whose sum is σ = 110539649532. Its totient is φ = 109682752512.

The previous prime is 110111200999. The next prime is 110111201023. The reversal of 110111201021 is 120102111011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109289748100 + 821452921 = 330590^2 + 28661^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111201021 - 2¹⁰ = 110111199997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110111200993 and 110111201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111201023) 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, 214223870 + ... + 214224383.

It is an arithmetic number, because the mean of its divisors is an integer number (27634912383).

Almost surely, 2^110111201021 is an apocalyptic number.

It is an amenable number.

110111201021 is a deficient number, since it is larger than the sum of its proper divisors (428448511).

110111201021 is an equidigital number, since it uses as much as digits as its factorization.

110111201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428448510.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 110111201021 its reverse (120102111011), we get a palindrome (230213312032).

It can be divided in two parts, 11011 and 1201021, that multiplied together give a palindrome (13224442231).

The spelling of 110111201021 in words is "one hundred ten billion, one hundred eleven million, two hundred one thousand, twenty-one".