201022520 has 32 divisors (see below), whose sum is σ = 457390800. Its totient is φ = 79504128.

The previous prime is 201022483. The next prime is 201022537. The reversal of 201022520 is 25220102.

It is a junction number, because it is equal to n+sod(n) for n = 201022495 and 201022504.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 24674 + ... + 31793.

Almost surely, 2^201022520 is an apocalyptic number.

201022520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201022520 is an abundant number, since it is smaller than the sum of its proper divisors (256368280).

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

201022520 is a wasteful number, since it uses less digits than its factorization.

201022520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56567 (or 56563 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 201022520 is about 14178.2410756765. The cubic root of 201022520 is about 585.7984762127.

Adding to 201022520 its reverse (25220102), we get a palindrome (226242622).

It can be divided in two parts, 20102 and 2520, that added together give a palindrome (22622).

The spelling of 201022520 in words is "two hundred one million, twenty-two thousand, five hundred twenty".