201240431212 has 12 divisors (see below), whose sum is σ = 352325163736. Its totient is φ = 100576098720.

The previous prime is 201240431143. The next prime is 201240431213. The reversal of 201240431212 is 212134042102.

It is a super-2 number, since 2×201240431212² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201240431213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11018958 + ... + 11037205.

Almost surely, 2^201240431212 is an apocalyptic number.

It is an amenable number.

201240431212 is a deficient number, since it is larger than the sum of its proper divisors (151084732524).

201240431212 is a wasteful number, since it uses less digits than its factorization.

201240431212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22058448 (or 22058446 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 201240431212 its reverse (212134042102), we get a palindrome (413374473314).

The spelling of 201240431212 in words is "two hundred one billion, two hundred forty million, four hundred thirty-one thousand, two hundred twelve".