10221002122220 has 96 divisors (see below), whose sum is σ = 22039344746496. Its totient is φ = 3979821081600.

The previous prime is 10221002122183. The next prime is 10221002122307. The reversal of 10221002122220 is 2222120012201.

It is a happy number.

It is a super-3 number, since 3×10221002122220³ (a number of 40 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 155963060 + ... + 156028580.

It is an arithmetic number, because the mean of its divisors is an integer number (229576507776).

Almost surely, 2^{10221002122220} is an apocalyptic number.

10221002122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221002122220 is an abundant number, since it is smaller than the sum of its proper divisors (11818342624276).

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

10221002122220 is a wasteful number, since it uses less digits than its factorization.

10221002122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66471 (or 66469 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10221002122220 its reverse (2222120012201), we get a palindrome (12443122134421).

The spelling of 10221002122220 in words is "ten trillion, two hundred twenty-one billion, two million, one hundred twenty-two thousand, two hundred twenty".