10221220122220 has 48 divisors (see below), whose sum is σ = 21965098256640. Its totient is φ = 3993159635136.

The previous prime is 10221220122203. The next prime is 10221220122229. The reversal of 10221220122220 is 2222102212201.

It is not an unprimeable number, because it can be changed into a prime (10221220122229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13846599 + ... + 14566081.

It is an arithmetic number, because the mean of its divisors is an integer number (457606213680).

Almost surely, 2^{10221220122220} is an apocalyptic number.

10221220122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221220122220 is an abundant number, since it is smaller than the sum of its proper divisors (11743878134420).

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

10221220122220 is a wasteful number, since it uses less digits than its factorization.

10221220122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736054 (or 736052 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10221220122220 its reverse (2222102212201), we get a palindrome (12443322334421).

The spelling of 10221220122220 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty".