201221210221120 has 56 divisors (see below), whose sum is σ = 479185277644800. Its totient is φ = 80483903165952.

The previous prime is 201221210221091. The next prime is 201221210221133. The reversal of 201221210221120 is 21122012122102.

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, 12260160 + ... + 23510719.

Almost surely, 2^{201221210221120} is an apocalyptic number.

201221210221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201221210221120 is an abundant number, since it is smaller than the sum of its proper divisors (277964067423680).

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

201221210221120 is a wasteful number, since it uses less digits than its factorization.

201221210221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35788475 (or 35788465 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201221210221120 its reverse (21122012122102), we get a palindrome (222343222343222).

The spelling of 201221210221120 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty".