201321012 has 24 divisors (see below), whose sum is σ = 480674656. Its totient is φ = 65546208.

The previous prime is 201321011. The next prime is 201321013. The reversal of 201321012 is 210123102.

It is an interprime number because it is at equal distance from previous prime (201321011) and next prime (201321013).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194563 + ... + 195594.

Almost surely, 2^201321012 is an apocalyptic number.

It is an amenable number.

201321012 is an abundant number, since it is smaller than the sum of its proper divisors (279353644).

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

201321012 is a wasteful number, since it uses less digits than its factorization.

201321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390207 (or 390205 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 201321012 is about 14188.7635824972. The cubic root of 201321012 is about 586.0882773818.

Adding to 201321012 its reverse (210123102), we get a palindrome (411444114).

The spelling of 201321012 in words is "two hundred one million, three hundred twenty-one thousand, twelve".