13012122312 has 128 divisors (see below), whose sum is σ = 41634201600. Its totient is φ = 3688421184.

The previous prime is 13012122307. The next prime is 13012122353. The reversal of 13012122312 is 21322121031.

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

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, 158143 + ... + 225905.

It is an arithmetic number, because the mean of its divisors is an integer number (325267200).

Almost surely, 2^13012122312 is an apocalyptic number.

13012122312 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 13012122312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20817100800).

13012122312 is an abundant number, since it is smaller than the sum of its proper divisors (28622079288).

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

13012122312 is a wasteful number, since it uses less digits than its factorization.

13012122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67912 (or 67902 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13012122312 its reverse (21322121031), we get a palindrome (34334243343).

The spelling of 13012122312 in words is "thirteen billion, twelve million, one hundred twenty-two thousand, three hundred twelve".