10021021210020 has 96 divisors (see below), whose sum is σ = 28239170899968. Its totient is φ = 2655154242432.

The previous prime is 10021021210009. The next prime is 10021021210063. The reversal of 10021021210020 is 2001212012001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10021021209978 and 10021021210005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5041677 + ... + 6742443.

It is an arithmetic number, because the mean of its divisors is an integer number (294158030208).

Almost surely, 2^{10021021210020} is an apocalyptic number.

10021021210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021021210020 is an abundant number, since it is smaller than the sum of its proper divisors (18218149689948).

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

10021021210020 is a wasteful number, since it uses less digits than its factorization.

10021021210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701409 (or 1701407 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10021021210020 its reverse (2001212012001), we get a palindrome (12022233222021).

It can be divided in two parts, 1002102 and 1210020, that added together give a palindrome (2212122).

The spelling of 10021021210020 in words is "ten trillion, twenty-one billion, twenty-one million, two hundred ten thousand, twenty".