201220012012 has 48 divisors (see below), whose sum is σ = 372638296800. Its totient is φ = 94809415680.

The previous prime is 201220012003. The next prime is 201220012013. The reversal of 201220012012 is 210210022102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201220011983 and 201220012001.

It is not an unprimeable number, because it can be changed into a prime (201220012013) 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, 12656164 + ... + 12672052.

It is an arithmetic number, because the mean of its divisors is an integer number (7763297850).

Almost surely, 2^201220012012 is an apocalyptic number.

It is an amenable number.

201220012012 is a deficient number, since it is larger than the sum of its proper divisors (171418284788).

201220012012 is a wasteful number, since it uses less digits than its factorization.

201220012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16786 (or 16784 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201220012012 its reverse (210210022102), we get a palindrome (411430034114).

The spelling of 201220012012 in words is "two hundred one billion, two hundred twenty million, twelve thousand, twelve".