110201021021 has 24 divisors (see below), whose sum is σ = 141421231224. Its totient is φ = 85065361920.

The previous prime is 110201021011. The next prime is 110201021023. The reversal of 110201021021 is 120120102011.

It can be written as a sum of positive squares in 4 ways, for example, as 23229112921 + 86971908100 = 152411^2 + 294910^2 .

It is a de Polignac number, because none of the positive numbers 2^k-110201021021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 110201020993 and 110201021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110201021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2083640 + ... + 2135873.

It is an arithmetic number, because the mean of its divisors is an integer number (5892551301).

Almost surely, 2^110201021021 is an apocalyptic number.

It is an amenable number.

110201021021 is a deficient number, since it is larger than the sum of its proper divisors (31220210203).

110201021021 is a wasteful number, since it uses less digits than its factorization.

110201021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219581 (or 4219574 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110201021021 its reverse (120120102011), we get a palindrome (230321123032).

The spelling of 110201021021 in words is "one hundred ten billion, two hundred one million, twenty-one thousand, twenty-one".