121200001212212 has 96 divisors (see below), whose sum is σ = 236517286404000. Its totient is φ = 53958028787712.

The previous prime is 121200001212211. The next prime is 121200001212281. The reversal of 121200001212212 is 212212100002121.

It can be written as a sum of positive squares in 16 ways, for example, as 84710597114896 + 36489404097316 = 9203836^2 + 6040646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200001212211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10541874848 + ... + 10541886344.

It is an arithmetic number, because the mean of its divisors is an integer number (2463721733375).

Almost surely, 2^{121200001212212} is an apocalyptic number.

It is an amenable number.

121200001212212 is a deficient number, since it is larger than the sum of its proper divisors (115317285191788).

121200001212212 is a wasteful number, since it uses less digits than its factorization.

121200001212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17605 (or 17603 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121200001212212 its reverse (212212100002121), we get a palindrome (333412101214333).

The spelling of 121200001212212 in words is "one hundred twenty-one trillion, two hundred billion, one million, two hundred twelve thousand, two hundred twelve".