12011012021122 has 4 divisors (see below), whose sum is σ = 18016518031686. Its totient is φ = 6005506010560.

The previous prime is 12011012021101. The next prime is 12011012021153. The reversal of 12011012021122 is 22112021011021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10843183824201 + 1167828196921 = 3292899^2 + 1080661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011012021096 and 12011012021105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002753005279 + ... + 3002753005282.

Almost surely, 2^{12011012021122} is an apocalyptic number.

12011012021122 is a deficient number, since it is larger than the sum of its proper divisors (6005506010564).

12011012021122 is an equidigital number, since it uses as much as digits as its factorization.

12011012021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005506010563.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12011012021122 its reverse (22112021011021), we get a palindrome (34123033032143).

It can be divided in two parts, 1201101 and 2021122, that added together give a palindrome (3222223).

The spelling of 12011012021122 in words is "twelve trillion, eleven billion, twelve million, twenty-one thousand, one hundred twenty-two".