2100022904 has 16 divisors (see below), whose sum is σ = 4500049200. Its totient is φ = 900009792.

The previous prime is 2100022891. The next prime is 2100022909. The reversal of 2100022904 is 4092200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100022909) 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 in 3 ways as a sum of consecutive naturals, for example, 18750149 + ... + 18750260.

It is an arithmetic number, because the mean of its divisors is an integer number (281253075).

Almost surely, 2^2100022904 is an apocalyptic number.

It is an amenable number.

2100022904 is an abundant number, since it is smaller than the sum of its proper divisors (2400026296).

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

2100022904 is a wasteful number, since it uses less digits than its factorization.

2100022904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37500422 (or 37500418 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2100022904 is about 45826.0068520049. The cubic root of 2100022904 is about 1280.5838205873.

Adding to 2100022904 its reverse (4092200012), we get a palindrome (6192222916).

The spelling of 2100022904 in words is "two billion, one hundred million, twenty-two thousand, nine hundred four".