10021021011020 has 12 divisors (see below), whose sum is σ = 21044144123184. Its totient is φ = 4008408404400.

The previous prime is 10021021011019. The next prime is 10021021011041. The reversal of 10021021011020 is 2011012012001.

It is a super-2 number, since 2×10021021011020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10021021010992 and 10021021011010.

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, 250525525256 + ... + 250525525295.

It is an arithmetic number, because the mean of its divisors is an integer number (1753678676932).

Almost surely, 2^{10021021011020} is an apocalyptic number.

10021021011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021021011020 is an abundant number, since it is smaller than the sum of its proper divisors (11023123112164).

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

10021021011020 is a wasteful number, since it uses less digits than its factorization.

10021021011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501051050560 (or 501051050558 counting only the distinct ones).

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

Adding to 10021021011020 its reverse (2011012012001), we get a palindrome (12032033023021).

The spelling of 10021021011020 in words is "ten trillion, twenty-one billion, twenty-one million, eleven thousand, twenty".