10002011021020 has 12 divisors (see below), whose sum is σ = 21004223144184. Its totient is φ = 4000804408400.

The previous prime is 10002011020961. The next prime is 10002011021071. The reversal of 10002011021020 is 2012011020001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10002011020988 and 10002011021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250050275506 + ... + 250050275545.

It is an arithmetic number, because the mean of its divisors is an integer number (1750351928682).

Almost surely, 2^{10002011021020} is an apocalyptic number.

10002011021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10002011021020 is an abundant number, since it is smaller than the sum of its proper divisors (11002212123164).

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

10002011021020 is a wasteful number, since it uses less digits than its factorization.

10002011021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500100551060 (or 500100551058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10002011021020 its reverse (2012011020001), we get a palindrome (12014022041021).

The spelling of 10002011021020 in words is "ten trillion, two billion, eleven million, twenty-one thousand, twenty".