103213023202021 has 2 divisors, whose sum is σ = 103213023202022. Its totient is φ = 103213023202020.

The previous prime is 103213023201979. The next prime is 103213023202073. The reversal of 103213023202021 is 120202320312301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101909226900100 + 1303796301921 = 10095010^2 + 1141839^2 .

It is a cyclic number.

It is not a de Polignac number, because 103213023202021 - 2¹¹ = 103213023199973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103213023201983 and 103213023202001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103213023206021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51606511601010 + 51606511601011.

It is an arithmetic number, because the mean of its divisors is an integer number (51606511601011).

Almost surely, 2^{103213023202021} is an apocalyptic number.

It is an amenable number.

103213023202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103213023202021 is an equidigital number, since it uses as much as digits as its factorization.

103213023202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 103213023202021 its reverse (120202320312301), we get a palindrome (223415343514322).

The spelling of 103213023202021 in words is "one hundred three trillion, two hundred thirteen billion, twenty-three million, two hundred two thousand, twenty-one".