10021210020 has 72 divisors (see below), whose sum is σ = 30428885760. Its totient is φ = 2669578560.

The previous prime is 10021210019. The next prime is 10021210021. The reversal of 10021210020 is 2001212001.

10021210020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10021210019) and next prime (10021210021).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10021209984 and 10021210011.

It is not an unprimeable number, because it can be changed into a prime (10021210021) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 150291 + ... + 206469.

Almost surely, 2^10021210020 is an apocalyptic number.

10021210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021210020 is an abundant number, since it is smaller than the sum of its proper divisors (20407675740).

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

10021210020 is a wasteful number, since it uses less digits than its factorization.

10021210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57185 (or 57180 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10021210020 its reverse (2001212001), we get a palindrome (12022422021).

The spelling of 10021210020 in words is "ten billion, twenty-one million, two hundred ten thousand, twenty".