20005101731122 has 24 divisors (see below), whose sum is σ = 31878287641044. Its totient is φ = 9413679316992.

The previous prime is 20005101731093. The next prime is 20005101731141. The reversal of 20005101731122 is 22113710150002.

It can be written as a sum of positive squares in 6 ways, for example, as 19437702610041 + 567399121081 = 4408821^2 + 753259^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10431538 + ... + 12199474.

Almost surely, 2^{20005101731122} is an apocalyptic number.

20005101731122 is a deficient number, since it is larger than the sum of its proper divisors (11873185909922).

20005101731122 is a wasteful number, since it uses less digits than its factorization.

20005101731122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787550 (or 1787533 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

Adding to 20005101731122 its reverse (22113710150002), we get a palindrome (42118811881124).

The spelling of 20005101731122 in words is "twenty trillion, five billion, one hundred one million, seven hundred thirty-one thousand, one hundred twenty-two".