2123111123988 has 24 divisors (see below), whose sum is σ = 4955163621408. Its totient is φ = 707526898656.

The previous prime is 2123111123963. The next prime is 2123111123989. The reversal of 2123111123988 is 8893211113212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123111123989) 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 7 ways as a sum of consecutive naturals, for example, 22051131 + ... + 22147202.

It is an arithmetic number, because the mean of its divisors is an integer number (206465150892).

Almost surely, 2^{2123111123988} is an apocalyptic number.

It is an amenable number.

2123111123988 is an abundant number, since it is smaller than the sum of its proper divisors (2832052497420).

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

2123111123988 is a wasteful number, since it uses less digits than its factorization.

2123111123988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44202343 (or 44202341 counting only the distinct ones).

The product of its digits is 41472, while the sum is 42.

The spelling of 2123111123988 in words is "two trillion, one hundred twenty-three billion, one hundred eleven million, one hundred twenty-three thousand, nine hundred eighty-eight".