201221162060 has 24 divisors (see below), whose sum is σ = 422573533200. Its totient is φ = 80486732864.

The previous prime is 201221162059. The next prime is 201221162083. The reversal of 201221162060 is 60261122102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276466 + ... + 1425414.

It is an arithmetic number, because the mean of its divisors is an integer number (17607230550).

Almost surely, 2^201221162060 is an apocalyptic number.

201221162060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201221162060 is an abundant number, since it is smaller than the sum of its proper divisors (221352371140).

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

201221162060 is a wasteful number, since it uses less digits than its factorization.

201221162060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216505 (or 216503 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 201221162060 its reverse (60261122102), we get a palindrome (261482284162).

The spelling of 201221162060 in words is "two hundred one billion, two hundred twenty-one million, one hundred sixty-two thousand, sixty".