1201111102012 has 24 divisors (see below), whose sum is σ = 2279870863200. Its totient is φ = 551442685440.

The previous prime is 1201111101997. The next prime is 1201111102013. The reversal of 1201111102012 is 2102011111021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201111101983 and 1201111102001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201111102013) by changing a digit.

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, 215404512 + ... + 215410087.

It is an arithmetic number, because the mean of its divisors is an integer number (94994619300).

Almost surely, 2^{1201111102012} is an apocalyptic number.

It is an amenable number.

1201111102012 is a deficient number, since it is larger than the sum of its proper divisors (1078759761188).

1201111102012 is a wasteful number, since it uses less digits than its factorization.

1201111102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430814661 (or 430814659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201111102012 its reverse (2102011111021), we get a palindrome (3303122213033).

Subtracting 1201111102012 from its reverse (2102011111021), we obtain a palindrome (900900009009).

The spelling of 1201111102012 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred two thousand, twelve".