202201110121220 has 72 divisors (see below), whose sum is σ = 494039623991256. Its totient is φ = 69313295202816.

The previous prime is 202201110121189. The next prime is 202201110121223. The reversal of 202201110121220 is 22121011102202.

It can be written as a sum of positive squares in 4 ways, for example, as 8227580877376 + 193973529243844 = 2868376^2 + 13927438^2 .

It is not an unprimeable number, because it can be changed into a prime (202201110121223) 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, 13735799 + ... + 24353118.

It is an arithmetic number, because the mean of its divisors is an integer number (6861661444323).

Almost surely, 2^{202201110121220} is an apocalyptic number.

202201110121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202201110121220 is an abundant number, since it is smaller than the sum of its proper divisors (291838513870036).

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

202201110121220 is a wasteful number, since it uses less digits than its factorization.

202201110121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38094357 (or 38094348 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202201110121220 its reverse (22121011102202), we get a palindrome (224322121223422).

The spelling of 202201110121220 in words is "two hundred two trillion, two hundred one billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty".