2121010004 has 24 divisors (see below), whose sum is σ = 3846894240. Its totient is φ = 1022033376.

The previous prime is 2121009983. The next prime is 2121010007. The reversal of 2121010004 is 4000101212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121010007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46739 + ... + 80165.

It is an arithmetic number, because the mean of its divisors is an integer number (160287260).

Almost surely, 2^2121010004 is an apocalyptic number.

It is an amenable number.

2121010004 is a deficient number, since it is larger than the sum of its proper divisors (1725884236).

2121010004 is a wasteful number, since it uses less digits than its factorization.

2121010004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34007 (or 34005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2121010004 is about 46054.4243694349. The cubic root of 2121010004 is about 1284.8356321024.

Adding to 2121010004 its reverse (4000101212), we get a palindrome (6121111216).

The spelling of 2121010004 in words is "two billion, one hundred twenty-one million, ten thousand, four".