201212101131 has 16 divisors (see below), whose sum is σ = 270752845824. Its totient is φ = 132909172704.

The previous prime is 201212101093. The next prime is 201212101159. The reversal of 201212101131 is 131101212102.

It is not a de Polignac number, because 201212101131 - 2⁹ = 201212100619 is a prime.

It is a super-2 number, since 2×201212101131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201212101131.

It is not an unprimeable number, because it can be changed into a prime (201212301131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60405 + ... + 637238.

It is an arithmetic number, because the mean of its divisors is an integer number (16922052864).

Almost surely, 2^201212101131 is an apocalyptic number.

201212101131 is a deficient number, since it is larger than the sum of its proper divisors (69540744693).

201212101131 is a wasteful number, since it uses less digits than its factorization.

201212101131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698530.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 201212101131 its reverse (131101212102), we get a palindrome (332313313233).

The spelling of 201212101131 in words is "two hundred one billion, two hundred twelve million, one hundred one thousand, one hundred thirty-one".