10020243102421 has 2 divisors, whose sum is σ = 10020243102422. Its totient is φ = 10020243102420.

The previous prime is 10020243102379. The next prime is 10020243102427. The reversal of 10020243102421 is 12420134202001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9851908500625 + 168334601796 = 3138775^2 + 410286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020243102421 - 2¹³ = 10020243094229 is a prime.

It is a super-2 number, since 2×10020243102421² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10020243102392 and 10020243102401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020243102427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010121551210 + 5010121551211.

It is an arithmetic number, because the mean of its divisors is an integer number (5010121551211).

Almost surely, 2^{10020243102421} is an apocalyptic number.

It is an amenable number.

10020243102421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020243102421 is an equidigital number, since it uses as much as digits as its factorization.

10020243102421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 10020243102421 its reverse (12420134202001), we get a palindrome (22440377304422).

The spelling of 10020243102421 in words is "ten trillion, twenty billion, two hundred forty-three million, one hundred two thousand, four hundred twenty-one".