21221112002227 has 2 divisors, whose sum is σ = 21221112002228. Its totient is φ = 21221112002226.

The previous prime is 21221112002173. The next prime is 21221112002239. The reversal of 21221112002227 is 72220021112212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21221112002227 - 2¹⁹ = 21221111477939 is a prime.

It is a super-2 number, since 2×21221112002227² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21221112002287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610556001113 + 10610556001114.

It is an arithmetic number, because the mean of its divisors is an integer number (10610556001114).

Almost surely, 2^{21221112002227} is an apocalyptic number.

21221112002227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221112002227 is an equidigital number, since it uses as much as digits as its factorization.

21221112002227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 21221112002227 its reverse (72220021112212), we get a palindrome (93441133114439).

The spelling of 21221112002227 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twelve million, two thousand, two hundred twenty-seven".