1201121111212 has 12 divisors (see below), whose sum is σ = 2293049394216. Its totient is φ = 545964141440.

The previous prime is 1201121111189. The next prime is 1201121111261. The reversal of 1201121111212 is 2121111211021.

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, 13649103493 + ... + 13649103580.

It is an arithmetic number, because the mean of its divisors is an integer number (191087449518).

Almost surely, 2^{1201121111212} is an apocalyptic number.

It is an amenable number.

1201121111212 is a deficient number, since it is larger than the sum of its proper divisors (1091928283004).

1201121111212 is a wasteful number, since it uses less digits than its factorization.

1201121111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27298207088 (or 27298207086 counting only the distinct ones).

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

Adding to 1201121111212 its reverse (2121111211021), we get a palindrome (3322232322233).

The spelling of 1201121111212 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twelve".