1212001100104 has 8 divisors (see below), whose sum is σ = 2272502062710. Its totient is φ = 606000550048.

The previous prime is 1212001100099. The next prime is 1212001100113. The reversal of 1212001100104 is 4010011002121.

It can be written as a sum of positive squares in only one way, i.e., 689228719204 + 522772380900 = 830198^2 + 723030^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75750068749 + ... + 75750068764.

Almost surely, 2^{1212001100104} is an apocalyptic number.

It is an amenable number.

1212001100104 is a deficient number, since it is larger than the sum of its proper divisors (1060500962606).

1212001100104 is a wasteful number, since it uses less digits than its factorization.

1212001100104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151500137519 (or 151500137515 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212001100104 its reverse (4010011002121), we get a palindrome (5222012102225).

The spelling of 1212001100104 in words is "one trillion, two hundred twelve billion, one million, one hundred thousand, one hundred four".