201022110020 has 96 divisors (see below), whose sum is σ = 445128155136. Its totient is φ = 76108032000.

The previous prime is 201022110011. The next prime is 201022110031. The reversal of 201022110020 is 20011220102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201022109983 and 201022110010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23422130 + ... + 23430710.

It is an arithmetic number, because the mean of its divisors is an integer number (4636751616).

Almost surely, 2^201022110020 is an apocalyptic number.

201022110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201022110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222564077568).

201022110020 is an abundant number, since it is smaller than the sum of its proper divisors (244106045116).

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

201022110020 is a wasteful number, since it uses less digits than its factorization.

201022110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9141 (or 9139 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201022110020 its reverse (20011220102), we get a palindrome (221033330122).

The spelling of 201022110020 in words is "two hundred one billion, twenty-two million, one hundred ten thousand, twenty".