10111321134 has 144 divisors (see below), whose sum is σ = 23978309472. Its totient is φ = 3073179648.

The previous prime is 10111321133. The next prime is 10111321151. The reversal of 10111321134 is 43112311101.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111321133) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 39343534 + ... + 39343790.

It is an arithmetic number, because the mean of its divisors is an integer number (166516038).

Almost surely, 2^10111321134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10111321134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11989154736).

10111321134 is an abundant number, since it is smaller than the sum of its proper divisors (13866988338).

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

10111321134 is a wasteful number, since it uses less digits than its factorization.

10111321134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 10111321134 its reverse (43112311101), we get a palindrome (53223632235).

The spelling of 10111321134 in words is "ten billion, one hundred eleven million, three hundred twenty-one thousand, one hundred thirty-four".