121100111102212 has 24 divisors (see below), whose sum is σ = 233480142205632. Its totient is φ = 54500500044000.

The previous prime is 121100111102147. The next prime is 121100111102219. The reversal of 121100111102212 is 212201111001121.

It is a super-2 number, since 2×121100111102212² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121100111102219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13625120568 + ... + 13625129455.

It is an arithmetic number, because the mean of its divisors is an integer number (9728339258568).

Almost surely, 2^{121100111102212} is an apocalyptic number.

It is an amenable number.

121100111102212 is a deficient number, since it is larger than the sum of its proper divisors (112380031103420).

121100111102212 is a wasteful number, since it uses less digits than its factorization.

121100111102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27250250139 (or 27250250137 counting only the distinct ones).

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

Adding to 121100111102212 its reverse (212201111001121), we get a palindrome (333301222103333).

The spelling of 121100111102212 in words is "one hundred twenty-one trillion, one hundred billion, one hundred eleven million, one hundred two thousand, two hundred twelve".