110021002101 has 18 divisors (see below), whose sum is σ = 168817312482. Its totient is φ = 69032784000.

The previous prime is 110021002097. The next prime is 110021002123. The reversal of 110021002101 is 101200120011.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 82056467025 + 27964535076 = 286455^2 + 167226^2 .

It is not a de Polignac number, because 110021002101 - 2² = 110021002097 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021002141) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21147150 + ... + 21152351.

Almost surely, 2^110021002101 is an apocalyptic number.

It is an amenable number.

110021002101 is a deficient number, since it is larger than the sum of its proper divisors (58796310381).

110021002101 is a wasteful number, since it uses less digits than its factorization.

110021002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42299541 (or 42299521 counting only the distinct ones).

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

Adding to 110021002101 its reverse (101200120011), we get a palindrome (211221122112).

The spelling of 110021002101 in words is "one hundred ten billion, twenty-one million, two thousand, one hundred one".