10021211020 has 12 divisors (see below), whose sum is σ = 21044543184. Its totient is φ = 4008484400.

The previous prime is 10021211003. The next prime is 10021211069. The reversal of 10021211020 is 2011212001.

10021211020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 10021210988 and 10021211006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250530256 + ... + 250530295.

It is an arithmetic number, because the mean of its divisors is an integer number (1753711932).

Almost surely, 2^10021211020 is an apocalyptic number.

10021211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021211020 is an abundant number, since it is smaller than the sum of its proper divisors (11023332164).

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

10021211020 is a wasteful number, since it uses less digits than its factorization.

10021211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501060560 (or 501060558 counting only the distinct ones).

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

Adding to 10021211020 its reverse (2011212001), we get a palindrome (12032423021).

The spelling of 10021211020 in words is "ten billion, twenty-one million, two hundred eleven thousand, twenty".