212224044451 has 2 divisors, whose sum is σ = 212224044452. Its totient is φ = 212224044450.

The previous prime is 212224044449. The next prime is 212224044481. The reversal of 212224044451 is 154440422212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212224044451 - 2¹ = 212224044449 is a prime.

Together with 212224044449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212224044481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106112022225 + 106112022226.

It is an arithmetic number, because the mean of its divisors is an integer number (106112022226).

Almost surely, 2^212224044451 is an apocalyptic number.

212224044451 is a deficient number, since it is larger than the sum of its proper divisors (1).

212224044451 is an equidigital number, since it uses as much as digits as its factorization.

212224044451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 212224044451 its reverse (154440422212), we get a palindrome (366664466663).

The spelling of 212224044451 in words is "two hundred twelve billion, two hundred twenty-four million, forty-four thousand, four hundred fifty-one".