201001221202220 has 48 divisors (see below), whose sum is σ = 444896652332160. Its totient is φ = 76163377495296.

The previous prime is 201001221202211. The next prime is 201001221202241. The reversal of 201001221202220 is 22202122100102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3269345012 + ... + 3269406491.

It is an arithmetic number, because the mean of its divisors is an integer number (9268680256920).

Almost surely, 2^{201001221202220} is an apocalyptic number.

201001221202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001221202220 is an abundant number, since it is smaller than the sum of its proper divisors (243895431129940).

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

201001221202220 is a wasteful number, since it uses less digits than its factorization.

201001221202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6538751594 (or 6538751592 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201001221202220 its reverse (22202122100102), we get a palindrome (223203343302322).

The spelling of 201001221202220 in words is "two hundred one trillion, one billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty".