201212000011172 has 12 divisors (see below), whose sum is σ = 354229509002880. Its totient is φ = 100003568867496.

The previous prime is 201212000011171. The next prime is 201212000011303. The reversal of 201212000011172 is 271110000212102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201212000011171) 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, 150607783772 + ... + 150607785107.

It is an arithmetic number, because the mean of its divisors is an integer number (29519125750240).

Almost surely, 2^{201212000011172} is an apocalyptic number.

It is an amenable number.

201212000011172 is a deficient number, since it is larger than the sum of its proper divisors (153017508991708).

201212000011172 is a wasteful number, since it uses less digits than its factorization.

201212000011172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301215569050 (or 301215569048 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 201212000011172 its reverse (271110000212102), we get a palindrome (472322000223274).

The spelling of 201212000011172 in words is "two hundred one trillion, two hundred twelve billion, eleven thousand, one hundred seventy-two".