2012012021204 has 6 divisors (see below), whose sum is σ = 3521021037114. Its totient is φ = 1006006010600.

The previous prime is 2012012021147. The next prime is 2012012021209. The reversal of 2012012021204 is 4021202102102.

It can be written as a sum of positive squares in only one way, i.e., 1491334324804 + 520677696400 = 1221202^2 + 721580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012012021209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251501502647 + ... + 251501502654.

It is an arithmetic number, because the mean of its divisors is an integer number (586836839519).

Almost surely, 2^{2012012021204} is an apocalyptic number.

It is an amenable number.

2012012021204 is a deficient number, since it is larger than the sum of its proper divisors (1509009015910).

2012012021204 is a wasteful number, since it uses less digits than its factorization.

2012012021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503003005305 (or 503003005303 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2012012021204 its reverse (4021202102102), we get a palindrome (6033214123306).

The spelling of 2012012021204 in words is "two trillion, twelve billion, twelve million, twenty-one thousand, two hundred four".