20221212001 has 2 divisors, whose sum is σ = 20221212002. Its totient is φ = 20221212000.

The previous prime is 20221211999. The next prime is 20221212073. The reversal of 20221212001 is 10021212202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10201202001 + 10020010000 = 101001^2 + 100100^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221212001 - 2¹ = 20221211999 is a prime.

It is a super-3 number, since 3×20221212001³ (a number of 32 digits) contains 333 as substring.

Together with 20221211999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20221212091) 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, 10110606000 + 10110606001.

It is an arithmetic number, because the mean of its divisors is an integer number (10110606001).

Almost surely, 2^20221212001 is an apocalyptic number.

It is an amenable number.

20221212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221212001 is an equidigital number, since it uses as much as digits as its factorization.

20221212001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20221212001 its reverse (10021212202), we get a palindrome (30242424203).

The spelling of 20221212001 in words is "twenty billion, two hundred twenty-one million, two hundred twelve thousand, one".