12021123453045 has 32 divisors (see below), whose sum is σ = 23138403041280. Its totient is φ = 5206140682560.

The previous prime is 12021123453019. The next prime is 12021123453109. The reversal of 12021123453045 is 54035432112021.

It is not a de Polignac number, because 12021123453045 - 2¹¹ = 12021123450997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021123452997 and 12021123453015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3012810901 + ... + 3012814890.

It is an arithmetic number, because the mean of its divisors is an integer number (723075095040).

Almost surely, 2^{12021123453045} is an apocalyptic number.

12021123453045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12021123453045 is a deficient number, since it is larger than the sum of its proper divisors (11117279588235).

12021123453045 is a wasteful number, since it uses less digits than its factorization.

12021123453045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025625825.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12021123453045 its reverse (54035432112021), we get a palindrome (66056555565066).

The spelling of 12021123453045 in words is "twelve trillion, twenty-one billion, one hundred twenty-three million, four hundred fifty-three thousand, forty-five".