202201221011220 has 72 divisors (see below), whose sum is σ = 633128984517120. Its totient is φ = 52180960259520.

The previous prime is 202201221011171. The next prime is 202201221011221. The reversal of 202201221011220 is 22110122102202.

It is a happy number.

202201221011220 is a `hidden beast` number, since 2 + 0 + 220 + 1 + 2 + 210 + 11 + 220 = 666.

It is a super-4 number, since 4×202201221011220⁴ (a number of 58 digits) contains 4444 as substring.

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 = 202201221011193 and 202201221011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201221011221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18118383400 + ... + 18118394559.

Almost surely, 2^{202201221011220} is an apocalyptic number.

202201221011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202201221011220 is an abundant number, since it is smaller than the sum of its proper divisors (430927763505900).

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

202201221011220 is a wasteful number, since it uses less digits than its factorization.

202201221011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36236778005 (or 36236778000 counting only the distinct ones).

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

Adding to 202201221011220 its reverse (22110122102202), we get a palindrome (224311343113422).

The spelling of 202201221011220 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-one million, eleven thousand, two hundred twenty".