1201112221012 has 24 divisors (see below), whose sum is σ = 2293978986432. Its totient is φ = 545734728000.

The previous prime is 1201112220989. The next prime is 1201112221013. The reversal of 1201112221012 is 2101222111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201112221013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5526489 + ... + 5739712.

It is an arithmetic number, because the mean of its divisors is an integer number (95582457768).

Almost surely, 2^{1201112221012} is an apocalyptic number.

It is an amenable number.

1201112221012 is a deficient number, since it is larger than the sum of its proper divisors (1092866765420).

1201112221012 is a wasteful number, since it uses less digits than its factorization.

1201112221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268639 (or 11268637 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201112221012 its reverse (2101222111021), we get a palindrome (3302334332033).

The spelling of 1201112221012 in words is "one trillion, two hundred one billion, one hundred twelve million, two hundred twenty-one thousand, twelve".