210021110221000 has 512 divisors, whose sum is σ = 561854180160000. Its totient is φ = 72930112819200.

The previous prime is 210021110220997. The next prime is 210021110221049. The reversal of 210021110221000 is 122011120012.

It is a super-2 number, since 2×210021110221000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

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 127 ways as a sum of consecutive naturals, for example, 2777321191 + ... + 2777396809.

It is an arithmetic number, because the mean of its divisors is an integer number (1097371445625).

Almost surely, 2^{210021110221000} is an apocalyptic number.

210021110221000 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 210021110221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280927090080000).

210021110221000 is an abundant number, since it is smaller than the sum of its proper divisors (351833069939000).

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

210021110221000 is a wasteful number, since it uses less digits than its factorization.

210021110221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75874 (or 75860 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210021110221000 its reverse (122011120012), we get a palindrome (210143121341012).

The spelling of 210021110221000 in words is "two hundred ten trillion, twenty-one billion, one hundred ten million, two hundred twenty-one thousand".