20212012267 has 2 divisors, whose sum is σ = 20212012268. Its totient is φ = 20212012266.

The previous prime is 20212012253. The next prime is 20212012321. The reversal of 20212012267 is 76221021202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212012267 - 2¹⁹ = 20211487979 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212012967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106006133 + 10106006134.

It is an arithmetic number, because the mean of its divisors is an integer number (10106006134).

Almost surely, 2^20212012267 is an apocalyptic number.

20212012267 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212012267 is an equidigital number, since it uses as much as digits as its factorization.

20212012267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 20212012267 its reverse (76221021202), we get a palindrome (96433033469).

The spelling of 20212012267 in words is "twenty billion, two hundred twelve million, twelve thousand, two hundred sixty-seven".