10221220022220 has 144 divisors (see below), whose sum is σ = 31031223455232. Its totient is φ = 2723298906240.

The previous prime is 10221220022207. The next prime is 10221220022239. The reversal of 10221220022220 is 2222002212201.

10221220022220 is a `hidden beast` number, since 1 + 0 + 221 + 2 + 200 + 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 = 10221220022193 and 10221220022202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1920196479 + ... + 1920201801.

It is an arithmetic number, because the mean of its divisors is an integer number (215494607328).

Almost surely, 2^{10221220022220} is an apocalyptic number.

10221220022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221220022220 is an abundant number, since it is smaller than the sum of its proper divisors (20810003433012).

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

10221220022220 is a wasteful number, since it uses less digits than its factorization.

10221220022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12572 (or 12567 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 10221220022220 its reverse (2222002212201), we get a palindrome (12443222234421).

The spelling of 10221220022220 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, twenty-two thousand, two hundred twenty".