102012012000421 has 2 divisors, whose sum is σ = 102012012000422. Its totient is φ = 102012012000420.

The previous prime is 102012012000413. The next prime is 102012012000443. The reversal of 102012012000421 is 124000210210201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69974713977921 + 32037298022500 = 8365089^2 + 5660150^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012012000421 - 2³ = 102012012000413 is a prime.

It is a super-2 number, since 2×102012012000421² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102012012000395 and 102012012000404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102012012000721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006006000210 + 51006006000211.

It is an arithmetic number, because the mean of its divisors is an integer number (51006006000211).

Almost surely, 2^{102012012000421} is an apocalyptic number.

It is an amenable number.

102012012000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012012000421 is an equidigital number, since it uses as much as digits as its factorization.

102012012000421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102012012000421 its reverse (124000210210201), we get a palindrome (226012222210622).

The spelling of 102012012000421 in words is "one hundred two trillion, twelve billion, twelve million, four hundred twenty-one", and thus it is an aban number.