10020110010021 has 12 divisors (see below), whose sum is σ = 14474828680000. Its totient is φ = 6679456520040.

The previous prime is 10020110010017. The next prime is 10020110010061. The reversal of 10020110010021 is 12001001102001.

It is a happy number.

It is not a de Polignac number, because 10020110010021 - 2² = 10020110010017 is a prime.

It is a super-2 number, since 2×10020110010021² (a number of 27 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10020110009985 and 10020110010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020110010061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51298771 + ... + 51493728.

Almost surely, 2^{10020110010021} is an apocalyptic number.

It is an amenable number.

10020110010021 is a deficient number, since it is larger than the sum of its proper divisors (4454718669979).

10020110010021 is a wasteful number, since it uses less digits than its factorization.

10020110010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102803336 (or 102803333 counting only the distinct ones).

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

Adding to 10020110010021 its reverse (12001001102001), we get a palindrome (22021111112022).

The spelling of 10020110010021 in words is "ten trillion, twenty billion, one hundred ten million, ten thousand, twenty-one".