210263143402021 has 2 divisors, whose sum is σ = 210263143402022. Its totient is φ = 210263143402020.

The previous prime is 210263143402009. The next prime is 210263143402031. The reversal of 210263143402021 is 120204341362012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148009244469025 + 62253898932996 = 12165905^2 + 7890114^2 .

It is a cyclic number.

It is not a de Polignac number, because 210263143402021 - 2¹¹ = 210263143399973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210263143402031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105131571701010 + 105131571701011.

It is an arithmetic number, because the mean of its divisors is an integer number (105131571701011).

Almost surely, 2^{210263143402021} is an apocalyptic number.

It is an amenable number.

210263143402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

210263143402021 is an equidigital number, since it uses as much as digits as its factorization.

210263143402021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 210263143402021 its reverse (120204341362012), we get a palindrome (330467484764033).

The spelling of 210263143402021 in words is "two hundred ten trillion, two hundred sixty-three billion, one hundred forty-three million, four hundred two thousand, twenty-one".