121112011212012 has 18 divisors (see below), whose sum is σ = 306144250563788. Its totient is φ = 40370670403992.

The previous prime is 121112011211957. The next prime is 121112011212029. The reversal of 121112011212012 is 210212110211121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1682111266798 + ... + 1682111266869.

Almost surely, 2^{121112011212012} is an apocalyptic number.

121112011212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121112011212012 is an abundant number, since it is smaller than the sum of its proper divisors (185032239351776).

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

121112011212012 is a wasteful number, since it uses less digits than its factorization.

121112011212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3364222533677 (or 3364222533672 counting only the distinct ones).

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

Adding to 121112011212012 its reverse (210212110211121), we get a palindrome (331324121423133).

The spelling of 121112011212012 in words is "one hundred twenty-one trillion, one hundred twelve billion, eleven million, two hundred twelve thousand, twelve".