2123522988 has 24 divisors (see below), whose sum is σ = 5022764208. Its totient is φ = 698144256.

The previous prime is 2123522983. The next prime is 2123522993. The reversal of 2123522988 is 8892253212.

It is an interprime number because it is at equal distance from previous prime (2123522983) and next prime (2123522993).

It is not an unprimeable number, because it can be changed into a prime (2123522983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211181 + ... + 1212932.

It is an arithmetic number, because the mean of its divisors is an integer number (209281842).

Almost surely, 2^2123522988 is an apocalyptic number.

It is an amenable number.

2123522988 is an abundant number, since it is smaller than the sum of its proper divisors (2899241220).

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

2123522988 is a wasteful number, since it uses less digits than its factorization.

2123522988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424193 (or 2424191 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 2123522988 is about 46081.6990572179. The cubic root of 2123522988 is about 1285.3428585438.

The spelling of 2123522988 in words is "two billion, one hundred twenty-three million, five hundred twenty-two thousand, nine hundred eighty-eight".