10020110100021 has 48 divisors (see below), whose sum is σ = 16606863157248. Its totient is φ = 5703028531200.

The previous prime is 10020110100017. The next prime is 10020110100031. The reversal of 10020110100021 is 12000101102001.

It is a happy number.

It is not a de Polignac number, because 10020110100021 - 2² = 10020110100017 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 10020110099976 and 10020110100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020110100001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 324144556 + ... + 324175466.

It is an arithmetic number, because the mean of its divisors is an integer number (345976315776).

Almost surely, 2^{10020110100021} is an apocalyptic number.

It is an amenable number.

10020110100021 is a deficient number, since it is larger than the sum of its proper divisors (6586753057227).

10020110100021 is a wasteful number, since it uses less digits than its factorization.

10020110100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51202 (or 51199 counting only the distinct ones).

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

Adding to 10020110100021 its reverse (12000101102001), we get a palindrome (22020211202022).

The spelling of 10020110100021 in words is "ten trillion, twenty billion, one hundred ten million, one hundred thousand, twenty-one".