12020522205105 has 40 divisors (see below), whose sum is σ = 21548993697000. Its totient is φ = 6410619500544.

The previous prime is 12020522205101. The next prime is 12020522205119. The reversal of 12020522205105 is 50150222502021.

It is a happy number.

12020522205105 is a `hidden beast` number, since 12 + 0 + 2 + 0 + 522 + 20 + 5 + 105 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 733119538176 + 11287402666929 = 856224^2 + 3359673^2 .

It is not a de Polignac number, because 12020522205105 - 2² = 12020522205101 is a prime.

It is a super-2 number, since 2×12020522205105² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12020522205101) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7335441 + ... + 8823249.

It is an arithmetic number, because the mean of its divisors is an integer number (538724842425).

Almost surely, 2^{12020522205105} is an apocalyptic number.

12020522205105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12020522205105 is a deficient number, since it is larger than the sum of its proper divisors (9528471491895).

12020522205105 is a wasteful number, since it uses less digits than its factorization.

12020522205105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507775 (or 1507766 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 12020522205105 its reverse (50150222502021), we get a palindrome (62170744707126).

The spelling of 12020522205105 in words is "twelve trillion, twenty billion, five hundred twenty-two million, two hundred five thousand, one hundred five".