1212001212204 has 18 divisors (see below), whose sum is σ = 3063669730940. Its totient is φ = 404000404056.

The previous prime is 1212001212199. The next prime is 1212001212223. The reversal of 1212001212204 is 4022121002121.

1212001212204 is a `hidden beast` number, since 121 + 200 + 121 + 220 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16833350134 + ... + 16833350205.

Almost surely, 2^{1212001212204} is an apocalyptic number.

It is an amenable number.

1212001212204 is an abundant number, since it is smaller than the sum of its proper divisors (1851668518736).

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

1212001212204 is a wasteful number, since it uses less digits than its factorization.

1212001212204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666700349 (or 33666700344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212001212204 its reverse (4022121002121), we get a palindrome (5234122214325).

The spelling of 1212001212204 in words is "one trillion, two hundred twelve billion, one million, two hundred twelve thousand, two hundred four".