10011002020 has 24 divisors (see below), whose sum is σ = 21049850304. Its totient is φ = 3999306336.

The previous prime is 10011002009. The next prime is 10011002039. The reversal of 10011002020 is 2020011001.

It is a super-2 number, since 2×10011002020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10011001994 and 10011002012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302272 + ... + 333751.

It is an arithmetic number, because the mean of its divisors is an integer number (877077096).

Almost surely, 2^10011002020 is an apocalyptic number.

10011002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011002020 is an abundant number, since it is smaller than the sum of its proper divisors (11038848284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10011002020 is a wasteful number, since it uses less digits than its factorization.

10011002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636819 (or 636817 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10011002020 its reverse (2020011001), we get a palindrome (12031013021).

The spelling of 10011002020 in words is "ten billion, eleven million, two thousand, twenty".