202221001202220 has 864 divisors, whose sum is σ = 830182212228096. Its totient is φ = 38771196963840.

The previous prime is 202221001202219. The next prime is 202221001202237. The reversal of 202221001202220 is 22202100122202.

202221001202220 is a `hidden beast` number, since 2 + 0 + 222 + 100 + 120 + 2 + 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 = 202221001202193 and 202221001202202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 4960875559 + ... + 4960916321.

Almost surely, 2^{202221001202220} is an apocalyptic number.

202221001202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221001202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415091106114048).

202221001202220 is an abundant number, since it is smaller than the sum of its proper divisors (627961211025876).

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

202221001202220 is a wasteful number, since it uses less digits than its factorization.

202221001202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43323 (or 43307 counting only the distinct ones).

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

Adding to 202221001202220 its reverse (22202100122202), we get a palindrome (224423101324422).

The spelling of 202221001202220 in words is "two hundred two trillion, two hundred twenty-one billion, one million, two hundred two thousand, two hundred twenty".