201321512 has 16 divisors (see below), whose sum is σ = 431403360. Its totient is φ = 86280624.

The previous prime is 201321493. The next prime is 201321529. The reversal of 201321512 is 215123102.

It is a happy number.

201321512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201321512² = 81060702387932288, which contains 22 as substring.

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, 1797458 + ... + 1797569.

It is an arithmetic number, because the mean of its divisors is an integer number (26962710).

Almost surely, 2^201321512 is an apocalyptic number.

It is an amenable number.

201321512 is an abundant number, since it is smaller than the sum of its proper divisors (230081848).

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

201321512 is a wasteful number, since it uses less digits than its factorization.

201321512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595040 (or 3595036 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 201321512 is about 14188.7812020624. The cubic root of 201321512 is about 586.0887625835.

Adding to 201321512 its reverse (215123102), we get a palindrome (416444614).

The spelling of 201321512 in words is "two hundred one million, three hundred twenty-one thousand, five hundred twelve".