10011212010020 has 24 divisors (see below), whose sum is σ = 22640741007864. Its totient is φ = 3696447511296.

The previous prime is 10011212009999. The next prime is 10011212010029. The reversal of 10011212010020 is 2001021211001.

It can be written as a sum of positive squares in 4 ways, for example, as 1633324896256 + 8377887113764 = 1278016^2 + 2894458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10011212009983 and 10011212010010.

It is not an unprimeable number, because it can be changed into a prime (10011212010029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19252330529 + ... + 19252331048.

It is an arithmetic number, because the mean of its divisors is an integer number (943364208661).

Almost surely, 2^{10011212010020} is an apocalyptic number.

10011212010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011212010020 is an abundant number, since it is smaller than the sum of its proper divisors (12629528997844).

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

10011212010020 is a wasteful number, since it uses less digits than its factorization.

10011212010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38504661599 (or 38504661597 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10011212010020 its reverse (2001021211001), we get a palindrome (12012233221021).

The spelling of 10011212010020 in words is "ten trillion, eleven billion, two hundred twelve million, ten thousand, twenty".