201321002022 has 192 divisors, whose sum is σ = 499367332800. Its totient is φ = 53852897280.

The previous prime is 201321002021. The next prime is 201321002027. The reversal of 201321002022 is 220200123102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201321001992 and 201321002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321002021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 60473254 + ... + 60476582.

It is an arithmetic number, because the mean of its divisors is an integer number (2600871525).

Almost surely, 2^201321002022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201321002022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249683666400).

201321002022 is an abundant number, since it is smaller than the sum of its proper divisors (298046330778).

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

201321002022 is a wasteful number, since it uses less digits than its factorization.

201321002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591 (or 3584 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 201321002022 its reverse (220200123102), we get a palindrome (421521125124).

The spelling of 201321002022 in words is "two hundred one billion, three hundred twenty-one million, two thousand, twenty-two".