201122201000020 has 24 divisors (see below), whose sum is σ = 440719953496704. Its totient is φ = 76951102991136.

The previous prime is 201122200999933. The next prime is 201122201000099. The reversal of 201122201000020 is 20000102221102.

It is a happy number.

It is a congruent 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, 218611087584 + ... + 218611088503.

It is an arithmetic number, because the mean of its divisors is an integer number (18363331395696).

Almost surely, 2^{201122201000020} is an apocalyptic number.

201122201000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122201000020 is an abundant number, since it is smaller than the sum of its proper divisors (239597752496684).

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

201122201000020 is a wasteful number, since it uses less digits than its factorization.

201122201000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437222176119 (or 437222176117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201122201000020 its reverse (20000102221102), we get a palindrome (221122303221122).

The spelling of 201122201000020 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred one million, twenty", and thus it is an aban number.