121111112202112 has 16 divisors (see below), whose sum is σ = 241276043840400. Its totient is φ = 60555556100992.

The previous prime is 121111112202061. The next prime is 121111112202127. The reversal of 121111112202112 is 211202211111121.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 121111112202112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473090281912 + ... + 473090282167.

It is an arithmetic number, because the mean of its divisors is an integer number (15079752740025).

Almost surely, 2^{121111112202112} is an apocalyptic number.

It is an amenable number.

121111112202112 is a deficient number, since it is larger than the sum of its proper divisors (120164931638288).

121111112202112 is an frugal number, since it uses more digits than its factorization.

121111112202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946180564093 (or 946180564081 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121111112202112 its reverse (211202211111121), we get a palindrome (332313323313233).

The spelling of 121111112202112 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred twelve million, two hundred two thousand, one hundred twelve".