110100012021 has 64 divisors (see below), whose sum is σ = 169664839680. Its totient is φ = 70489440000.

The previous prime is 110100012019. The next prime is 110100012059. The reversal of 110100012021 is 120210001011.

It is a happy number.

It is not a de Polignac number, because 110100012021 - 2¹ = 110100012019 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 110100011994 and 110100012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110100012521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74846316 + ... + 74847786.

It is an arithmetic number, because the mean of its divisors is an integer number (2651013120).

Almost surely, 2^110100012021 is an apocalyptic number.

It is an amenable number.

110100012021 is a deficient number, since it is larger than the sum of its proper divisors (59564827659).

110100012021 is a wasteful number, since it uses less digits than its factorization.

110100012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135 (or 2129 counting only the distinct ones).

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

Adding to 110100012021 its reverse (120210001011), we get a palindrome (230310013032).

The spelling of 110100012021 in words is "one hundred ten billion, one hundred million, twelve thousand, twenty-one".