12020322412535 has 16 divisors (see below), whose sum is σ = 14604114809856. Its totient is φ = 9496948107168.

The previous prime is 12020322412531. The next prime is 12020322412537. The reversal of 12020322412535 is 53521422302021.

It is a cyclic number.

It is not a de Polignac number, because 12020322412535 - 2² = 12020322412531 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 (12020322412531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31609949 + ... + 31987958.

It is an arithmetic number, because the mean of its divisors is an integer number (912757175616).

Almost surely, 2^{12020322412535} is an apocalyptic number.

12020322412535 is a deficient number, since it is larger than the sum of its proper divisors (2583792397321).

12020322412535 is a wasteful number, since it uses less digits than its factorization.

12020322412535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63598382.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 12020322412535 its reverse (53521422302021), we get a palindrome (65541744714556).

The spelling of 12020322412535 in words is "twelve trillion, twenty billion, three hundred twenty-two million, four hundred twelve thousand, five hundred thirty-five".