20212222231 has 2 divisors, whose sum is σ = 20212222232. Its totient is φ = 20212222230.

The previous prime is 20212222193. The next prime is 20212222237. The reversal of 20212222231 is 13222221202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212222231 - 2¹¹ = 20212220183 is a prime.

It is a super-2 number, since 2×20212222231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212222199 and 20212222208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212222237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106111115 + 10106111116.

It is an arithmetic number, because the mean of its divisors is an integer number (10106111116).

Almost surely, 2^20212222231 is an apocalyptic number.

20212222231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212222231 is an equidigital number, since it uses as much as digits as its factorization.

20212222231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20212222231 its reverse (13222221202), we get a palindrome (33434443433).

The spelling of 20212222231 in words is "twenty billion, two hundred twelve million, two hundred twenty-two thousand, two hundred thirty-one".