11111153412 has 96 divisors (see below), whose sum is σ = 27886965120. Its totient is φ = 3432499200.

The previous prime is 11111153401. The next prime is 11111153441. The reversal of 11111153412 is 21435111111.

It is a super-3 number, since 3×11111153412³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4844538 + ... + 4846830.

It is an arithmetic number, because the mean of its divisors is an integer number (290489220).

Almost surely, 2^11111153412 is an apocalyptic number.

11111153412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111153412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13943482560).

11111153412 is an abundant number, since it is smaller than the sum of its proper divisors (16775811708).

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

11111153412 is a wasteful number, since it uses less digits than its factorization.

11111153412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2771 counting only the distinct ones).

The product of its digits is 120, while the sum is 21.

Adding to 11111153412 its reverse (21435111111), we get a palindrome (32546264523).

The spelling of 11111153412 in words is "eleven billion, one hundred eleven million, one hundred fifty-three thousand, four hundred twelve".