110202001021 has 12 divisors (see below), whose sum is σ = 129463419420. Its totient is φ = 93523617600.

The previous prime is 110202000959. The next prime is 110202001037. The reversal of 110202001021 is 120100202011.

It can be written as a sum of positive squares in 2 ways, for example, as 65541632121 + 44660368900 = 256011^2 + 211330^2 .

It is not a de Polignac number, because 110202001021 - 2⁷ = 110202000893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110202000989 and 110202001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110202001051) 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 11 ways as a sum of consecutive naturals, for example, 11128816 + ... + 11138713.

It is an arithmetic number, because the mean of its divisors is an integer number (10788618285).

Almost surely, 2^110202001021 is an apocalyptic number.

It is an amenable number.

110202001021 is a deficient number, since it is larger than the sum of its proper divisors (19261418399).

110202001021 is a wasteful number, since it uses less digits than its factorization.

110202001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22267644 (or 22267637 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 110202001021 its reverse (120100202011), we get a palindrome (230302203032).

The spelling of 110202001021 in words is "one hundred ten billion, two hundred two million, one thousand, twenty-one".