21011202319 has 2 divisors, whose sum is σ = 21011202320. Its totient is φ = 21011202318.

The previous prime is 21011202283. The next prime is 21011202323. The reversal of 21011202319 is 91320211012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21011202319 - 2¹⁷ = 21011071247 is a prime.

It is a super-2 number, since 2×21011202319² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21011202319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21011202349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505601159 + 10505601160.

It is an arithmetic number, because the mean of its divisors is an integer number (10505601160).

Almost surely, 2^21011202319 is an apocalyptic number.

21011202319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011202319 is an equidigital number, since it uses as much as digits as its factorization.

21011202319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 21011202319 in words is "twenty-one billion, eleven million, two hundred two thousand, three hundred nineteen".