11212013124 has 144 divisors (see below), whose sum is σ = 30855006000. Its totient is φ = 3412426752.

The previous prime is 11212013081. The next prime is 11212013149. The reversal of 11212013124 is 42131021211.

It can be written as a sum of positive squares in 8 ways, for example, as 16257024 + 11195756100 = 4032^2 + 105810^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11212013097 and 11212013106.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24970852 + ... + 24971300.

It is an arithmetic number, because the mean of its divisors is an integer number (214270875).

Almost surely, 2^11212013124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212013124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15427503000).

11212013124 is an abundant number, since it is smaller than the sum of its proper divisors (19642992876).

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

11212013124 is a wasteful number, since it uses less digits than its factorization.

11212013124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11212013124 its reverse (42131021211), we get a palindrome (53343034335).

The spelling of 11212013124 in words is "eleven billion, two hundred twelve million, thirteen thousand, one hundred twenty-four".