201111220212 has 24 divisors (see below), whose sum is σ = 536296587456. Its totient is φ = 57460348608.

The previous prime is 201111220129. The next prime is 201111220223. The reversal of 201111220212 is 212022111102.

It is a junction number, because it is equal to n+sod(n) for n = 201111220191 and 201111220200.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1197090513 + ... + 1197090680.

It is an arithmetic number, because the mean of its divisors is an integer number (22345691144).

Almost surely, 2^201111220212 is an apocalyptic number.

It is an amenable number.

201111220212 is an abundant number, since it is smaller than the sum of its proper divisors (335185367244).

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

201111220212 is a wasteful number, since it uses less digits than its factorization.

201111220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394181207 (or 2394181205 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201111220212 its reverse (212022111102), we get a palindrome (413133331314).

The spelling of 201111220212 in words is "two hundred one billion, one hundred eleven million, two hundred twenty thousand, two hundred twelve".