10201221122220 has 72 divisors (see below), whose sum is σ = 32289082521696. Its totient is φ = 2602050604032.

The previous prime is 10201221122219. The next prime is 10201221122237. The reversal of 10201221122220 is 2222112210201.

It is a happy number.

10201221122220 is a `hidden beast` number, since 1 + 0 + 201 + 221 + 1 + 22 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10201221122193 and 10201221122202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232027397 + ... + 1232035676.

It is an arithmetic number, because the mean of its divisors is an integer number (448459479468).

Almost surely, 2^{10201221122220} is an apocalyptic number.

10201221122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10201221122220 is an abundant number, since it is smaller than the sum of its proper divisors (22087861399476).

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

10201221122220 is a wasteful number, since it uses less digits than its factorization.

10201221122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464063111 (or 2464063106 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10201221122220 its reverse (2222112210201), we get a palindrome (12423333332421).

The spelling of 10201221122220 in words is "ten trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".