201020022 has 32 divisors (see below), whose sum is σ = 510528000. Its totient is φ = 57434184.

The previous prime is 201020011. The next prime is 201020041. The reversal of 201020022 is 220020102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201019986 and 201020013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265522 + ... + 266277.

It is an arithmetic number, because the mean of its divisors is an integer number (15954000).

Almost surely, 2^201020022 is an apocalyptic number.

201020022 is an abundant number, since it is smaller than the sum of its proper divisors (309507978).

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

201020022 is a wasteful number, since it uses less digits than its factorization.

201020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531817 (or 531811 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 201020022 is about 14178.1529826702. The cubic root of 201020022 is about 585.7960497339.

Adding to 201020022 its reverse (220020102), we get a palindrome (421040124).

The spelling of 201020022 in words is "two hundred one million, twenty thousand, twenty-two".