210021011020000 has 120 divisors (see below), whose sum is σ = 517627793440296. Its totient is φ = 83854819776000.

The previous prime is 210021011019961. The next prime is 210021011020013. The reversal of 210021011020000 is 20110120012.

It is a super-2 number, since 2×210021011020000² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1341234 + ... + 20538766.

Almost surely, 2^{210021011020000} is an apocalyptic number.

210021011020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210021011020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258813896720148).

210021011020000 is an abundant number, since it is smaller than the sum of its proper divisors (307606782420296).

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

210021011020000 is an equidigital number, since it uses as much as digits as its factorization.

210021011020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19198110 (or 19198087 counting only the distinct ones).

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

Adding to 210021011020000 its reverse (20110120012), we get a palindrome (210041121140012).

The spelling of 210021011020000 in words is "two hundred ten trillion, twenty-one billion, eleven million, twenty thousand".