22451222215447 has 2 divisors, whose sum is σ = 22451222215448. Its totient is φ = 22451222215446.

The previous prime is 22451222215393. The next prime is 22451222215493. The reversal of 22451222215447 is 74451222215422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22451222215447 - 2¹⁵ = 22451222182679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22451222210447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11225611107723 + 11225611107724.

It is an arithmetic number, because the mean of its divisors is an integer number (11225611107724).

Almost surely, 2^{22451222215447} is an apocalyptic number.

22451222215447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22451222215447 is an equidigital number, since it uses as much as digits as its factorization.

22451222215447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 716800, while the sum is 43.

The spelling of 22451222215447 in words is "twenty-two trillion, four hundred fifty-one billion, two hundred twenty-two million, two hundred fifteen thousand, four hundred forty-seven".