110213021 has 4 divisors (see below), whose sum is σ = 114013500. Its totient is φ = 106412544.

The previous prime is 110212981. The next prime is 110213039. The reversal of 110213021 is 120312011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120312011 = 23 ⋅5230957.

It can be written as a sum of positive squares in 2 ways, for example, as 89510521 + 20702500 = 9461^2 + 4550^2 .

It is a cyclic number.

It is not a de Polignac number, because 110213021 - 2²⁶ = 43104157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110212993 and 110213011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110213041) 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, 1900196 + ... + 1900253.

It is an arithmetic number, because the mean of its divisors is an integer number (28503375).

Almost surely, 2^110213021 is an apocalyptic number.

It is an amenable number.

110213021 is a deficient number, since it is larger than the sum of its proper divisors (3800479).

110213021 is an equidigital number, since it uses as much as digits as its factorization.

110213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800478.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 110213021 is about 10498.2389475569. The cubic root of 110213021 is about 479.4510811288.

Adding to 110213021 its reverse (120312011), we get a palindrome (230525032).

The spelling of 110213021 in words is "one hundred ten million, two hundred thirteen thousand, twenty-one".