221201201122012 has 12 divisors (see below), whose sum is σ = 403932628136016. Its totient is φ = 105791878797440.

The previous prime is 221201201122003. The next prime is 221201201122037. The reversal of 221201201122012 is 210221102102122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202180440789 + ... + 1202180440972.

It is an arithmetic number, because the mean of its divisors is an integer number (33661052344668).

Almost surely, 2^{221201201122012} is an apocalyptic number.

It is an amenable number.

221201201122012 is a deficient number, since it is larger than the sum of its proper divisors (182731427014004).

221201201122012 is a wasteful number, since it uses less digits than its factorization.

221201201122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404360881788 (or 2404360881786 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221201201122012 its reverse (210221102102122), we get a palindrome (431422303224134).

The spelling of 221201201122012 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred one million, one hundred twenty-two thousand, twelve".