10221021210220 has 48 divisors (see below), whose sum is σ = 22157409254400. Its totient is φ = 3956368455360.

The previous prime is 10221021210217. The next prime is 10221021210341. The reversal of 10221021210220 is 2201212012201.

It is a happy number.

It is a super-2 number, since 2×10221021210220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221021210194 and 10221021210203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16093051 + ... + 16716109.

It is an arithmetic number, because the mean of its divisors is an integer number (461612692800).

Almost surely, 2^{10221021210220} is an apocalyptic number.

10221021210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221021210220 is an abundant number, since it is smaller than the sum of its proper divisors (11936388044180).

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

10221021210220 is a wasteful number, since it uses less digits than its factorization.

10221021210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649558 (or 649556 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10221021210220 its reverse (2201212012201), we get a palindrome (12422233222421).

It can be divided in two parts, 1022102 and 1210220, that added together give a palindrome (2232322).

The spelling of 10221021210220 in words is "ten trillion, two hundred twenty-one billion, twenty-one million, two hundred ten thousand, two hundred twenty".