201220122200020 has 96 divisors (see below), whose sum is σ = 527512409093376. Its totient is φ = 62636824012800.

The previous prime is 201220122199961. The next prime is 201220122200029. The reversal of 201220122200020 is 20002221022102.

It is a junction number, because it is equal to n+sod(n) for n = 201220122199967 and 201220122200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220122200029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83326021 + ... + 85706860.

It is an arithmetic number, because the mean of its divisors is an integer number (5494920928056).

Almost surely, 2^{201220122200020} is an apocalyptic number.

201220122200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220122200020 is an abundant number, since it is smaller than the sum of its proper divisors (326292286893356).

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

201220122200020 is a wasteful number, since it uses less digits than its factorization.

201220122200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169033681 (or 169033679 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201220122200020 its reverse (20002221022102), we get a palindrome (221222343222122).

The spelling of 201220122200020 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred thousand, twenty".