121112211210112 has 32 divisors (see below), whose sum is σ = 242360198498880. Its totient is φ = 60284553547776.

The previous prime is 121112211210103. The next prime is 121112211210121. The reversal of 121112211210112 is 211012112211121.

It is an interprime number because it is at equal distance from previous prime (121112211210103) and next prime (121112211210121).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×121112211210112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121112211210112.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2121471793 + ... + 2121528880.

It is an arithmetic number, because the mean of its divisors is an integer number (7573756203090).

Almost surely, 2^{121112211210112} is an apocalyptic number.

It is an amenable number.

121112211210112 is an abundant number, since it is smaller than the sum of its proper divisors (121247987288768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121112211210112 is an equidigital number, since it uses as much as digits as its factorization.

121112211210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243000910 (or 4243000898 counting only the distinct ones).

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

Adding to 121112211210112 its reverse (211012112211121), we get a palindrome (332124323421233).

The spelling of 121112211210112 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred eleven million, two hundred ten thousand, one hundred twelve".