121100122011212 has 12 divisors (see below), whose sum is σ = 215517166291560. Its totient is φ = 59523788785056.

The previous prime is 121100122011199. The next prime is 121100122011251. The reversal of 121100122011212 is 212110221001121.

It is a super-4 number, since 4×121100122011212⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 256568054873 + ... + 256568055344.

It is an arithmetic number, because the mean of its divisors is an integer number (17959763857630).

Almost surely, 2^{121100122011212} is an apocalyptic number.

It is an amenable number.

121100122011212 is a deficient number, since it is larger than the sum of its proper divisors (94417044280348).

121100122011212 is a wasteful number, since it uses less digits than its factorization.

121100122011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513136110280 (or 513136110278 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121100122011212 its reverse (212110221001121), we get a palindrome (333210343012333).

The spelling of 121100122011212 in words is "one hundred twenty-one trillion, one hundred billion, one hundred twenty-two million, eleven thousand, two hundred twelve".