12001511122 has 8 divisors (see below), whose sum is σ = 18116931276. Its totient is φ = 5962534032.

The previous prime is 12001511069. The next prime is 12001511141. The reversal of 12001511122 is 22111510021.

It can be written as a sum of positive squares in 2 ways, for example, as 11922674481 + 78836641 = 109191^2 + 8879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12001511122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001511096 and 12001511105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19110373 + ... + 19111000.

Almost surely, 2^12001511122 is an apocalyptic number.

12001511122 is a deficient number, since it is larger than the sum of its proper divisors (6115420154).

12001511122 is a wasteful number, since it uses less digits than its factorization.

12001511122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38221532.

The product of its (nonzero) digits is 40, while the sum is 16.

The spelling of 12001511122 in words is "twelve billion, one million, five hundred eleven thousand, one hundred twenty-two".