102304212411421 has 2 divisors, whose sum is σ = 102304212411422. Its totient is φ = 102304212411420.

The previous prime is 102304212411419. The next prime is 102304212411469. The reversal of 102304212411421 is 124114212403201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73462898102500 + 28841314308921 = 8571050^2 + 5370411^2 .

It is a cyclic number.

It is not a de Polignac number, because 102304212411421 - 2¹ = 102304212411419 is a prime.

It is a super-2 number, since 2×102304212411421² (a number of 29 digits) contains 22 as substring.

Together with 102304212411419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102304212411421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102304222411421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51152106205710 + 51152106205711.

It is an arithmetic number, because the mean of its divisors is an integer number (51152106205711).

Almost surely, 2^{102304212411421} is an apocalyptic number.

It is an amenable number.

102304212411421 is a deficient number, since it is larger than the sum of its proper divisors (1).

102304212411421 is an equidigital number, since it uses as much as digits as its factorization.

102304212411421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 102304212411421 its reverse (124114212403201), we get a palindrome (226418424814622).

The spelling of 102304212411421 in words is "one hundred two trillion, three hundred four billion, two hundred twelve million, four hundred eleven thousand, four hundred twenty-one".