121112001112212 has 72 divisors (see below), whose sum is σ = 334414383069312. Its totient is φ = 36652379491200.

The previous prime is 121112001112187. The next prime is 121112001112213. The reversal of 121112001112212 is 212211100211121.

It is a happy number.

121112001112212 is a `hidden beast` number, since 1 + 211 + 120 + 0 + 111 + 221 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112001112213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200643708 + ... + 201246419.

It is an arithmetic number, because the mean of its divisors is an integer number (4644644209296).

Almost surely, 2^{121112001112212} is an apocalyptic number.

121112001112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121112001112212 is an abundant number, since it is smaller than the sum of its proper divisors (213302381957100).

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

121112001112212 is a wasteful number, since it uses less digits than its factorization.

121112001112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401890909 (or 401890904 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121112001112212 its reverse (212211100211121), we get a palindrome (333323101323333).

The spelling of 121112001112212 in words is "one hundred twenty-one trillion, one hundred twelve billion, one million, one hundred twelve thousand, two hundred twelve".