21260072219 has 2 divisors, whose sum is σ = 21260072220. Its totient is φ = 21260072218.

The previous prime is 21260072209. The next prime is 21260072257. The reversal of 21260072219 is 91227006212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21260072219 is a prime.

It is a super-2 number, since 2×21260072219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21260072209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10630036109 + 10630036110.

It is an arithmetic number, because the mean of its divisors is an integer number (10630036110).

Almost surely, 2^21260072219 is an apocalyptic number.

21260072219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21260072219 is an equidigital number, since it uses as much as digits as its factorization.

21260072219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 21260072219 in words is "twenty-one billion, two hundred sixty million, seventy-two thousand, two hundred nineteen".