201212201022 has 64 divisors (see below), whose sum is σ = 475808256000. Its totient is φ = 55510640640.

The previous prime is 201212201009. The next prime is 201212201023. The reversal of 201212201022 is 220102212102.

It is a junction number, because it is equal to n+sod(n) for n = 201212200992 and 201212201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212201023) 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, 412504 + ... + 756692.

It is an arithmetic number, because the mean of its divisors is an integer number (7434504000).

Almost surely, 2^201212201022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201212201022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237904128000).

201212201022 is an abundant number, since it is smaller than the sum of its proper divisors (274596054978).

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

201212201022 is a wasteful number, since it uses less digits than its factorization.

201212201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344681.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201212201022 its reverse (220102212102), we get a palindrome (421314413124).

The spelling of 201212201022 in words is "two hundred one billion, two hundred twelve million, two hundred one thousand, twenty-two".