201223536 has 20 divisors (see below), whose sum is σ = 519827592. Its totient is φ = 67074496.

The previous prime is 201223523. The next prime is 201223549. The reversal of 201223536 is 635322102.

201223536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201223523) and next prime (201223549).

It is a super-2 number, since 2×201223536² = 80981822880686592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2096031 + ... + 2096126.

Almost surely, 2^201223536 is an apocalyptic number.

It is an amenable number.

201223536 is an abundant number, since it is smaller than the sum of its proper divisors (318604056).

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

201223536 is a wasteful number, since it uses less digits than its factorization.

201223536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192168 (or 4192162 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 201223536 is about 14185.3281950049. The cubic root of 201223536 is about 585.9936709897.

Adding to 201223536 its reverse (635322102), we get a palindrome (836545638).

The spelling of 201223536 in words is "two hundred one million, two hundred twenty-three thousand, five hundred thirty-six".