201820022 has 8 divisors (see below), whose sum is σ = 320537736. Its totient is φ = 94974112.

The previous prime is 201819991. The next prime is 201820037. The reversal of 201820022 is 220028102.

201820022 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 2967908 + ... + 2967975.

It is an arithmetic number, because the mean of its divisors is an integer number (40067217).

Almost surely, 2^201820022 is an apocalyptic number.

201820022 is a deficient number, since it is larger than the sum of its proper divisors (118717714).

201820022 is a wasteful number, since it uses less digits than its factorization.

201820022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935902.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 201820022 is about 14206.3373886445. The cubic root of 201820022 is about 586.5721192476.

Adding to 201820022 its reverse (220028102), we get a palindrome (421848124).

The spelling of 201820022 in words is "two hundred one million, eight hundred twenty thousand, twenty-two".