110311201021 has 4 divisors (see below), whose sum is σ = 126069944032. Its totient is φ = 94552458012.

The previous prime is 110311200997. The next prime is 110311201073. The reversal of 110311201021 is 120102113011.

It is a happy number.

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: 120102113011 = 1039 ⋅115593949.

It is a cyclic number.

It is not a de Polignac number, because 110311201021 - 2²³ = 110302812413 is a prime.

It is a super-2 number, since 2×110311201021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110311200992 and 110311201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110311291021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7879371495 + ... + 7879371508.

It is an arithmetic number, because the mean of its divisors is an integer number (31517486008).

Almost surely, 2^110311201021 is an apocalyptic number.

It is an amenable number.

110311201021 is a deficient number, since it is larger than the sum of its proper divisors (15758743011).

110311201021 is an equidigital number, since it uses as much as digits as its factorization.

110311201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15758743010.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 110311201021 its reverse (120102113011), we get a palindrome (230413314032).

The spelling of 110311201021 in words is "one hundred ten billion, three hundred eleven million, two hundred one thousand, twenty-one".