12111051408 has 40 divisors (see below), whose sum is σ = 31317712800. Its totient is φ = 4033039104.

The previous prime is 12111051391. The next prime is 12111051409. The reversal of 12111051408 is 80415011121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12111051409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74893 + ... + 172716.

It is an arithmetic number, because the mean of its divisors is an integer number (782942820).

Almost surely, 2^12111051408 is an apocalyptic number.

It is an amenable number.

12111051408 is an abundant number, since it is smaller than the sum of its proper divisors (19206661392).

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

12111051408 is a wasteful number, since it uses less digits than its factorization.

12111051408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248639 (or 248633 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

Adding to 12111051408 its reverse (80415011121), we get a palindrome (92526062529).

The spelling of 12111051408 in words is "twelve billion, one hundred eleven million, fifty-one thousand, four hundred eight".