110021020101 has 12 divisors (see below), whose sum is σ = 159319556812. Its totient is φ = 73162590336.

The previous prime is 110021020079. The next prime is 110021020103. The reversal of 110021020101 is 101020120011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34601580225 + 75419439876 = 186015^2 + 274626^2 .

It is not a de Polignac number, because 110021020101 - 2⁷ = 110021019973 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021020103) 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, 15392596 + ... + 15399741.

Almost surely, 2^110021020101 is an apocalyptic number.

It is an amenable number.

110021020101 is a deficient number, since it is larger than the sum of its proper divisors (49298536711).

110021020101 is a wasteful number, since it uses less digits than its factorization.

110021020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30792740 (or 30792737 counting only the distinct ones).

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

Adding to 110021020101 its reverse (101020120011), we get a palindrome (211041140112).

The spelling of 110021020101 in words is "one hundred ten billion, twenty-one million, twenty thousand, one hundred one".