201211011012012 has 48 divisors (see below), whose sum is σ = 497498227752960. Its totient is φ = 63075667997952.

The previous prime is 201211011012001. The next prime is 201211011012019. The reversal of 201211011012012 is 210210110112102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201211011011982 and 201211011012000.

It is not an unprimeable number, because it can be changed into a prime (201211011012019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385324888 + ... + 385846719.

It is an arithmetic number, because the mean of its divisors is an integer number (10364546411520).

Almost surely, 2^{201211011012012} is an apocalyptic number.

It is an amenable number.

201211011012012 is an abundant number, since it is smaller than the sum of its proper divisors (296287216740948).

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

201211011012012 is a wasteful number, since it uses less digits than its factorization.

201211011012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771172910 (or 771172908 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201211011012012 its reverse (210210110112102), we get a palindrome (411421121124114).

The spelling of 201211011012012 in words is "two hundred one trillion, two hundred eleven billion, eleven million, twelve thousand, twelve".