10111010238 has 24 divisors (see below), whose sum is σ = 25036787568. Its totient is φ = 2888860032.

The previous prime is 10111010237. The next prime is 10111010249. The reversal of 10111010238 is 83201011101.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 10111010238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111010237) 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 11 ways as a sum of consecutive naturals, for example, 40122931 + ... + 40123182.

It is an arithmetic number, because the mean of its divisors is an integer number (1043199482).

Almost surely, 2^10111010238 is an apocalyptic number.

10111010238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10111010238 is an abundant number, since it is smaller than the sum of its proper divisors (14925777330).

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

10111010238 is a wasteful number, since it uses less digits than its factorization.

10111010238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80246128 (or 80246125 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 10111010238 its reverse (83201011101), we get a palindrome (93312021339).

The spelling of 10111010238 in words is "ten billion, one hundred eleven million, ten thousand, two hundred thirty-eight".