20010220099931 has 2 divisors, whose sum is σ = 20010220099932. Its totient is φ = 20010220099930.

The previous prime is 20010220099907. The next prime is 20010220100009. The reversal of 20010220099931 is 13999002201002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010220099931 - 2¹⁰ = 20010220098907 is a prime.

It is a super-2 number, since 2×20010220099931² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20010220099901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005110049965 + 10005110049966.

It is an arithmetic number, because the mean of its divisors is an integer number (10005110049966).

Almost surely, 2^{20010220099931} is an apocalyptic number.

20010220099931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010220099931 is an equidigital number, since it uses as much as digits as its factorization.

20010220099931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 20010220099931 in words is "twenty trillion, ten billion, two hundred twenty million, ninety-nine thousand, nine hundred thirty-one".