2113221404 has 24 divisors (see below), whose sum is σ = 4340673120. Its totient is φ = 881188416.

The previous prime is 2113221373. The next prime is 2113221421. The reversal of 2113221404 is 4041223112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1018859 + ... + 1020930.

It is an arithmetic number, because the mean of its divisors is an integer number (180861380).

Almost surely, 2^2113221404 is an apocalyptic number.

It is an amenable number.

2113221404 is an abundant number, since it is smaller than the sum of its proper divisors (2227451716).

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

2113221404 is a wasteful number, since it uses less digits than its factorization.

2113221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039837 (or 2039835 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2113221404 is about 45969.7879481731. The cubic root of 2113221404 is about 1283.2610135817.

Adding to 2113221404 its reverse (4041223112), we get a palindrome (6154444516).

The spelling of 2113221404 in words is "two billion, one hundred thirteen million, two hundred twenty-one thousand, four hundred four".