12020450304551 has 24 divisors (see below), whose sum is σ = 13151361310416. Its totient is φ = 10980708710400.

The previous prime is 12020450304529. The next prime is 12020450304563. The reversal of 12020450304551 is 15540305402021.

It is not a de Polignac number, because 12020450304551 - 2¹⁴ = 12020450288167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020450304581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35900156 + ... + 36233438.

It is an arithmetic number, because the mean of its divisors is an integer number (547973387934).

Almost surely, 2^{12020450304551} is an apocalyptic number.

12020450304551 is a deficient number, since it is larger than the sum of its proper divisors (1130911005865).

12020450304551 is a wasteful number, since it uses less digits than its factorization.

12020450304551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335523 (or 335510 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 12020450304551 its reverse (15540305402021), we get a palindrome (27560755706572).

The spelling of 12020450304551 in words is "twelve trillion, twenty billion, four hundred fifty million, three hundred four thousand, five hundred fifty-one".