201040243212 has 24 divisors (see below), whose sum is σ = 476783966512. Its totient is φ = 65914833600.

The previous prime is 201040243211. The next prime is 201040243223. The reversal of 201040243212 is 212342040102.

It is a super-2 number, since 2×201040243212² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201040243211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137321839 + ... + 137323302.

Almost surely, 2^201040243212 is an apocalyptic number.

It is an amenable number.

201040243212 is an abundant number, since it is smaller than the sum of its proper divisors (275743723300).

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

201040243212 is a wasteful number, since it uses less digits than its factorization.

201040243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274645209 (or 274645207 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 201040243212 its reverse (212342040102), we get a palindrome (413382283314).

The spelling of 201040243212 in words is "two hundred one billion, forty million, two hundred forty-three thousand, two hundred twelve".