21030312201079 has 2 divisors, whose sum is σ = 21030312201080. Its totient is φ = 21030312201078.

The previous prime is 21030312200999. The next prime is 21030312201103. The reversal of 21030312201079 is 97010221303012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21030312201079 - 2¹⁵ = 21030312168311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21030312201079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030322201079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515156100539 + 10515156100540.

It is an arithmetic number, because the mean of its divisors is an integer number (10515156100540).

Almost surely, 2^{21030312201079} is an apocalyptic number.

21030312201079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030312201079 is an equidigital number, since it uses as much as digits as its factorization.

21030312201079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 21030312201079 in words is "twenty-one trillion, thirty billion, three hundred twelve million, two hundred one thousand, seventy-nine".