12011312034 has 48 divisors (see below), whose sum is σ = 27787586112. Its totient is φ = 3740625504.

The previous prime is 12011311979. The next prime is 12011312059. The reversal of 12011312034 is 43021311021.

It is a super-2 number, since 2×12011312034² (a number of 21 digits) contains 22 as substring.

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 = 12011311998 and 12011312016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319557 + ... + 355160.

It is an arithmetic number, because the mean of its divisors is an integer number (578908044).

Almost surely, 2^12011312034 is an apocalyptic number.

12011312034 is an abundant number, since it is smaller than the sum of its proper divisors (15776274078).

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

12011312034 is a wasteful number, since it uses less digits than its factorization.

12011312034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674791 (or 674788 counting only the distinct ones).

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

Adding to 12011312034 its reverse (43021311021), we get a palindrome (55032623055).

The spelling of 12011312034 in words is "twelve billion, eleven million, three hundred twelve thousand, thirty-four".