1212021100204 has 12 divisors (see below), whose sum is σ = 2155808022928. Its totient is φ = 596075950800.

The previous prime is 1212021100163. The next prime is 1212021100211. The reversal of 1212021100204 is 4020011202121.

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, 2483649552 + ... + 2483650039.

Almost surely, 2^{1212021100204} is an apocalyptic number.

It is an amenable number.

1212021100204 is a deficient number, since it is larger than the sum of its proper divisors (943786922724).

1212021100204 is a wasteful number, since it uses less digits than its factorization.

1212021100204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967299656 (or 4967299654 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212021100204 its reverse (4020011202121), we get a palindrome (5232032302325).

The spelling of 1212021100204 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred thousand, two hundred four".