201022000 has 40 divisors (see below), whose sum is σ = 486076032. Its totient is φ = 80408000.

The previous prime is 201021973. The next prime is 201022007. The reversal of 201022000 is 220102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (201022007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48256 + ... + 52255.

Almost surely, 2^201022000 is an apocalyptic number.

201022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201022000 is an abundant number, since it is smaller than the sum of its proper divisors (285054032).

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

201022000 is a wasteful number, since it uses less digits than its factorization.

201022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100534 (or 100518 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 201022000 is about 14178.2227377059. Note that the first 3 decimals coincide. The cubic root of 201022000 is about 585.7979711026.

Adding to 201022000 its reverse (220102), we get a palindrome (201242102).

The spelling of 201022000 in words is "two hundred one million, twenty-two thousand".