110021121 has 36 divisors (see below), whose sum is σ = 192920832. Its totient is φ = 60130224.

The previous prime is 110021113. The next prime is 110021129. The reversal of 110021121 is 121120011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (110021113) and next prime (110021129).

It is not a de Polignac number, because 110021121 - 2³ = 110021113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (110021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4720 + ... + 15566.

It is an arithmetic number, because the mean of its divisors is an integer number (5358912).

Almost surely, 2^110021121 is an apocalyptic number.

It is an amenable number.

110021121 is a deficient number, since it is larger than the sum of its proper divisors (82899711).

110021121 is a wasteful number, since it uses less digits than its factorization.

110021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890 (or 10880 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 110021121 is about 10489.0953375398. The cubic root of 110021121 is about 479.1726502828.

Adding to 110021121 its reverse (121120011), we get a palindrome (231141132).

The spelling of 110021121 in words is "one hundred ten million, twenty-one thousand, one hundred twenty-one".