20002120020131 has 2 divisors, whose sum is σ = 20002120020132. Its totient is φ = 20002120020130.

The previous prime is 20002120020089. The next prime is 20002120020227. The reversal of 20002120020131 is 13102002120002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002120020131 is a prime.

It is a super-2 number, since 2×20002120020131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20002120020331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001060010065 + 10001060010066.

It is an arithmetic number, because the mean of its divisors is an integer number (10001060010066).

Almost surely, 2^{20002120020131} is an apocalyptic number.

20002120020131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002120020131 is an equidigital number, since it uses as much as digits as its factorization.

20002120020131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20002120020131 its reverse (13102002120002), we get a palindrome (33104122140133).

The spelling of 20002120020131 in words is "twenty trillion, two billion, one hundred twenty million, twenty thousand, one hundred thirty-one".