2121233004 has 72 divisors (see below), whose sum is σ = 6193566288. Its totient is φ = 604984320.

The previous prime is 2121232961. The next prime is 2121233027. The reversal of 2121233004 is 4003321212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150817 + ... + 164280.

It is an arithmetic number, because the mean of its divisors is an integer number (86021754).

Almost surely, 2^2121233004 is an apocalyptic number.

It is an amenable number.

2121233004 is an abundant number, since it is smaller than the sum of its proper divisors (4072333284).

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

2121233004 is a wasteful number, since it uses less digits than its factorization.

2121233004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315135 (or 315130 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2121233004 is about 46056.8453544096. The cubic root of 2121233004 is about 1284.8806591264.

Adding to 2121233004 its reverse (4003321212), we get a palindrome (6124554216).

The spelling of 2121233004 in words is "two billion, one hundred twenty-one million, two hundred thirty-three thousand, four".