12121123311302 has 32 divisors (see below), whose sum is σ = 19700839388160. Its totient is φ = 5571324680320.

The previous prime is 12121123311191. The next prime is 12121123311317. The reversal of 12121123311302 is 20311332112121.

It is a happy number.

It is a super-2 number, since 2×12121123311302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6939602 + ... + 8508837.

It is an arithmetic number, because the mean of its divisors is an integer number (615651230880).

Almost surely, 2^{12121123311302} is an apocalyptic number.

12121123311302 is a deficient number, since it is larger than the sum of its proper divisors (7579716076858).

12121123311302 is a wasteful number, since it uses less digits than its factorization.

12121123311302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15448996.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12121123311302 its reverse (20311332112121), we get a palindrome (32432455423423).

The spelling of 12121123311302 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred eleven thousand, three hundred two".