201022056 has 24 divisors (see below), whose sum is σ = 544434930. Its totient is φ = 67007328.

The previous prime is 201022037. The next prime is 201022069. The reversal of 201022056 is 650220102.

It can be written as a sum of positive squares in only one way, i.e., 186322500 + 14699556 = 13650^2 + 3834^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1395915 + ... + 1396058.

Almost surely, 2^201022056 is an apocalyptic number.

It is an amenable number.

201022056 is an abundant number, since it is smaller than the sum of its proper divisors (343412874).

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

201022056 is a wasteful number, since it uses less digits than its factorization.

201022056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791985 (or 2791978 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201022056 is about 14178.2247125654. The cubic root of 201022056 is about 585.7980254991.

Adding to 201022056 its reverse (650220102), we get a palindrome (851242158).

The spelling of 201022056 in words is "two hundred one million, twenty-two thousand, fifty-six".