21260867860223 has 2 divisors, whose sum is σ = 21260867860224. Its totient is φ = 21260867860222.

The previous prime is 21260867860189. The next prime is 21260867860261. The reversal of 21260867860223 is 32206876806212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21260867860223 - 2¹² = 21260867856127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21260867860423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10630433930111 + 10630433930112.

It is an arithmetic number, because the mean of its divisors is an integer number (10630433930112).

Almost surely, 2^{21260867860223} is an apocalyptic number.

21260867860223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21260867860223 is an equidigital number, since it uses as much as digits as its factorization.

21260867860223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 21260867860223 in words is "twenty-one trillion, two hundred sixty billion, eight hundred sixty-seven million, eight hundred sixty thousand, two hundred twenty-three".