2121021201004 has 6 divisors (see below), whose sum is σ = 3711787101764. Its totient is φ = 1060510600500.

The previous prime is 2121021200981. The next prime is 2121021201043. The reversal of 2121021201004 is 4001021201212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265127650122 + ... + 265127650129.

Almost surely, 2^{2121021201004} is an apocalyptic number.

It is an amenable number.

2121021201004 is a deficient number, since it is larger than the sum of its proper divisors (1590765900760).

2121021201004 is a wasteful number, since it uses less digits than its factorization.

2121021201004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530255300255 (or 530255300253 counting only the distinct ones).

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

Adding to 2121021201004 its reverse (4001021201212), we get a palindrome (6122042402216).

The spelling of 2121021201004 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two hundred one thousand, four".