1201022101112 has 8 divisors (see below), whose sum is σ = 2251916439600. Its totient is φ = 600511050552.

The previous prime is 1201022101093. The next prime is 1201022101117. The reversal of 1201022101112 is 2111012201021.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201022101117) 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 as a sum of consecutive naturals, namely, 75063881312 + ... + 75063881327.

It is an arithmetic number, because the mean of its divisors is an integer number (281489554950).

Almost surely, 2^{1201022101112} is an apocalyptic number.

It is an amenable number.

1201022101112 is a deficient number, since it is larger than the sum of its proper divisors (1050894338488).

1201022101112 is a wasteful number, since it uses less digits than its factorization.

1201022101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150127762645 (or 150127762641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201022101112 its reverse (2111012201021), we get a palindrome (3312034302133).

Subtracting 1201022101112 from its reverse (2111012201021), we obtain a palindrome (909990099909).

The spelling of 1201022101112 in words is "one trillion, two hundred one billion, twenty-two million, one hundred one thousand, one hundred twelve".