21010103031143 has 2 divisors, whose sum is σ = 21010103031144. Its totient is φ = 21010103031142.

The previous prime is 21010103031103. The next prime is 21010103031167. The reversal of 21010103031143 is 34113030101012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010103031143 - 2¹⁴ = 21010103014759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010103031103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505051515571 + 10505051515572.

It is an arithmetic number, because the mean of its divisors is an integer number (10505051515572).

Almost surely, 2^{21010103031143} is an apocalyptic number.

21010103031143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010103031143 is an equidigital number, since it uses as much as digits as its factorization.

21010103031143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21010103031143 its reverse (34113030101012), we get a palindrome (55123133132155).

The spelling of 21010103031143 in words is "twenty-one trillion, ten billion, one hundred three million, thirty-one thousand, one hundred forty-three".