201122220020 has 12 divisors (see below), whose sum is σ = 422356662084. Its totient is φ = 80448888000.

The previous prime is 201122220011. The next prime is 201122220031. The reversal of 201122220020 is 20022221102.

It can be written as a sum of positive squares in 2 ways, for example, as 131132342884 + 69989877136 = 362122^2 + 264556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201122219977 and 201122220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5028055481 + ... + 5028055520.

It is an arithmetic number, because the mean of its divisors is an integer number (35196388507).

Almost surely, 2^201122220020 is an apocalyptic number.

201122220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122220020 is an abundant number, since it is smaller than the sum of its proper divisors (221234442064).

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

201122220020 is a wasteful number, since it uses less digits than its factorization.

201122220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056111010 (or 10056111008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201122220020 its reverse (20022221102), we get a palindrome (221144441122).

The spelling of 201122220020 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, twenty".