20222178451 has 2 divisors, whose sum is σ = 20222178452. Its totient is φ = 20222178450.

The previous prime is 20222178421. The next prime is 20222178467. The reversal of 20222178451 is 15487122202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20222178451 - 2⁹ = 20222177939 is a prime.

It is not a weakly prime, because it can be changed into another prime (20222178421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111089225 + 10111089226.

It is an arithmetic number, because the mean of its divisors is an integer number (10111089226).

Almost surely, 2^20222178451 is an apocalyptic number.

20222178451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222178451 is an equidigital number, since it uses as much as digits as its factorization.

20222178451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 20222178451 in words is "twenty billion, two hundred twenty-two million, one hundred seventy-eight thousand, four hundred fifty-one".