121200100112212 has 12 divisors (see below), whose sum is σ = 231382009305216. Its totient is φ = 55090954596440.

The previous prime is 121200100112191. The next prime is 121200100112257. The reversal of 121200100112212 is 212211001002121.

It is a super-2 number, since 2×121200100112212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377273864868 + ... + 1377273864955.

It is an arithmetic number, because the mean of its divisors is an integer number (19281834108768).

Almost surely, 2^{121200100112212} is an apocalyptic number.

It is an amenable number.

121200100112212 is a deficient number, since it is larger than the sum of its proper divisors (110181909193004).

121200100112212 is a wasteful number, since it uses less digits than its factorization.

121200100112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754547729838 (or 2754547729836 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121200100112212 its reverse (212211001002121), we get a palindrome (333411101114333).

The spelling of 121200100112212 in words is "one hundred twenty-one trillion, two hundred billion, one hundred million, one hundred twelve thousand, two hundred twelve".