12021111323122 has 64 divisors (see below), whose sum is σ = 20787537254400. Its totient is φ = 5156258878080.

The previous prime is 12021111323107. The next prime is 12021111323131. The reversal of 12021111323122 is 22132311112021.

It is a happy number.

It is a super-2 number, since 2×12021111323122² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12021111323093 and 12021111323102.

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, 133059838 + ... + 133150150.

It is an arithmetic number, because the mean of its divisors is an integer number (324805269600).

Almost surely, 2^{12021111323122} is an apocalyptic number.

12021111323122 is a deficient number, since it is larger than the sum of its proper divisors (8766425931278).

12021111323122 is a wasteful number, since it uses less digits than its factorization.

12021111323122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91591.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12021111323122 its reverse (22132311112021), we get a palindrome (34153422435143).

The spelling of 12021111323122 in words is "twelve trillion, twenty-one billion, one hundred eleven million, three hundred twenty-three thousand, one hundred twenty-two".