1212204101004 has 36 divisors (see below), whose sum is σ = 3299888942896. Its totient is φ = 372985877088.

The previous prime is 1212204100993. The next prime is 1212204101027. The reversal of 1212204101004 is 4001014022121.

1212204101004 is a `hidden beast` number, since 1 + 21 + 220 + 410 + 10 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

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 in 11 ways as a sum of consecutive naturals, for example, 1295089384 + ... + 1295090319.

Almost surely, 2^{1212204101004} is an apocalyptic number.

It is an amenable number.

1212204101004 is an abundant number, since it is smaller than the sum of its proper divisors (2087684841892).

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

1212204101004 is a wasteful number, since it uses less digits than its factorization.

1212204101004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590179726 (or 2590179721 counting only the distinct ones).

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

Adding to 1212204101004 its reverse (4001014022121), we get a palindrome (5213218123125).

It can be divided in two parts, 121220 and 4101004, that added together give a palindrome (4222224).

The spelling of 1212204101004 in words is "one trillion, two hundred twelve billion, two hundred four million, one hundred one thousand, four".