121212100112 has 40 divisors (see below), whose sum is σ = 248774782752. Its totient is φ = 57015360000.

The previous prime is 121212100049. The next prime is 121212100171. The reversal of 121212100112 is 211001212121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513287 + ... + 711257.

Almost surely, 2^121212100112 is an apocalyptic number.

It is an amenable number.

121212100112 is an abundant number, since it is smaller than the sum of its proper divisors (127562682640).

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

121212100112 is a wasteful number, since it uses less digits than its factorization.

121212100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200247 (or 200241 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121212100112 its reverse (211001212121), we get a palindrome (332213312233).

The spelling of 121212100112 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred thousand, one hundred twelve".