121200021211112 has 8 divisors (see below), whose sum is σ = 227250039770850. Its totient is φ = 60600010605552.

The previous prime is 121200021211051. The next prime is 121200021211133. The reversal of 121200021211112 is 211112120002121.

It can be written as a sum of positive squares in only one way, i.e., 74812016567236 + 46388004643876 = 8649394^2 + 6810874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×121200021211112² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7575001325687 + ... + 7575001325702.

Almost surely, 2^{121200021211112} is an apocalyptic number.

It is an amenable number.

121200021211112 is a deficient number, since it is larger than the sum of its proper divisors (106050018559738).

121200021211112 is a wasteful number, since it uses less digits than its factorization.

121200021211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15150002651395 (or 15150002651391 counting only the distinct ones).

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

Adding to 121200021211112 its reverse (211112120002121), we get a palindrome (332312141213233).

The spelling of 121200021211112 in words is "one hundred twenty-one trillion, two hundred billion, twenty-one million, two hundred eleven thousand, one hundred twelve".