10123209988 has 12 divisors (see below), whose sum is σ = 17716337100. Its totient is φ = 5061399392.

The previous prime is 10123209959. The next prime is 10123209989. The reversal of 10123209988 is 88990232101.

10123209988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8796939264 + 1326270724 = 93792^2 + 36418^2 .

It is a super-2 number, since 2×10123209988² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10123209989) 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 3 ways as a sum of consecutive naturals, for example, 132438 + ... + 194386.

It is an arithmetic number, because the mean of its divisors is an integer number (1476361425).

Almost surely, 2^10123209988 is an apocalyptic number.

It is an amenable number.

10123209988 is a deficient number, since it is larger than the sum of its proper divisors (7593127112).

10123209988 is a wasteful number, since it uses less digits than its factorization.

10123209988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102806 (or 102804 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 10123209988 in words is "ten billion, one hundred twenty-three million, two hundred nine thousand, nine hundred eighty-eight".