10021231431181 has 2 divisors, whose sum is σ = 10021231431182. Its totient is φ = 10021231431180.

The previous prime is 10021231431103. The next prime is 10021231431187. The reversal of 10021231431181 is 18113413212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9955507905225 + 65723525956 = 3155235^2 + 256366^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021231431181 - 2¹¹ = 10021231429133 is a prime.

It is a super-2 number, since 2×10021231431181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021231431187) 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, 5010615715590 + 5010615715591.

It is an arithmetic number, because the mean of its divisors is an integer number (5010615715591).

Almost surely, 2^{10021231431181} is an apocalyptic number.

It is an amenable number.

10021231431181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021231431181 is an equidigital number, since it uses as much as digits as its factorization.

10021231431181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 10021231431181 its reverse (18113413212001), we get a palindrome (28134644643182).

The spelling of 10021231431181 in words is "ten trillion, twenty-one billion, two hundred thirty-one million, four hundred thirty-one thousand, one hundred eighty-one".