20010120211031 has 2 divisors, whose sum is σ = 20010120211032. Its totient is φ = 20010120211030.

The previous prime is 20010120211007. The next prime is 20010120211063. The reversal of 20010120211031 is 13011202101002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010120211031 - 2⁶ = 20010120210967 is a prime.

It is a super-2 number, since 2×20010120211031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010120210997 and 20010120211015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010110211031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005060105515 + 10005060105516.

It is an arithmetic number, because the mean of its divisors is an integer number (10005060105516).

Almost surely, 2^{20010120211031} is an apocalyptic number.

20010120211031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010120211031 is an equidigital number, since it uses as much as digits as its factorization.

20010120211031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20010120211031 its reverse (13011202101002), we get a palindrome (33021322312033).

The spelling of 20010120211031 in words is "twenty trillion, ten billion, one hundred twenty million, two hundred eleven thousand, thirty-one".