201101131212 has 48 divisors (see below), whose sum is σ = 489708586752. Its totient is φ = 64109897280.

The previous prime is 201101131177. The next prime is 201101131237. The reversal of 201101131212 is 212131101102.

It is a junction number, because it is equal to n+sod(n) for n = 201101131191 and 201101131200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1996278 + ... + 2094594.

It is an arithmetic number, because the mean of its divisors is an integer number (10202262224).

Almost surely, 2^201101131212 is an apocalyptic number.

It is an amenable number.

201101131212 is an abundant number, since it is smaller than the sum of its proper divisors (288607455540).

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

201101131212 is a wasteful number, since it uses less digits than its factorization.

201101131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105758 (or 105756 counting only the distinct ones).

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

Adding to 201101131212 its reverse (212131101102), we get a palindrome (413232232314).

The spelling of 201101131212 in words is "two hundred one billion, one hundred one million, one hundred thirty-one thousand, two hundred twelve".