21221012011063 has 2 divisors, whose sum is σ = 21221012011064. Its totient is φ = 21221012011062.

The previous prime is 21221012010973. The next prime is 21221012011093. The reversal of 21221012011063 is 36011021012212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21221012011063 - 2⁹ = 21221012010551 is a prime.

It is a super-2 number, since 2×21221012011063² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21221012011093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610506005531 + 10610506005532.

It is an arithmetic number, because the mean of its divisors is an integer number (10610506005532).

Almost surely, 2^{21221012011063} is an apocalyptic number.

21221012011063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221012011063 is an equidigital number, since it uses as much as digits as its factorization.

21221012011063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21221012011063 its reverse (36011021012212), we get a palindrome (57232033023275).

The spelling of 21221012011063 in words is "twenty-one trillion, two hundred twenty-one billion, twelve million, eleven thousand, sixty-three".