210221011011020 has 24 divisors (see below), whose sum is σ = 444640124014800. Its totient is φ = 83483451853632.

The previous prime is 210221011010903. The next prime is 210221011011107. The reversal of 210221011011020 is 20110110122012.

It is a super-2 number, since 2×210221011011020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210221011010986 and 210221011011004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37809531575 + ... + 37809537134.

It is an arithmetic number, because the mean of its divisors is an integer number (18526671833950).

Almost surely, 2^{210221011011020} is an apocalyptic number.

210221011011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221011011020 is an abundant number, since it is smaller than the sum of its proper divisors (234419113003780).

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

210221011011020 is a wasteful number, since it uses less digits than its factorization.

210221011011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75619068857 (or 75619068855 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210221011011020 its reverse (20110110122012), we get a palindrome (230331121133032).

The spelling of 210221011011020 in words is "two hundred ten trillion, two hundred twenty-one billion, eleven million, eleven thousand, twenty".