20221040449 has 2 divisors, whose sum is σ = 20221040450. Its totient is φ = 20221040448.

The previous prime is 20221040383. The next prime is 20221040461. The reversal of 20221040449 is 94404012202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20059623424 + 161417025 = 141632^2 + 12705^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221040449 - 2¹³ = 20221032257 is a prime.

It is not a weakly prime, because it can be changed into another prime (20221040549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110520224 + 10110520225.

It is an arithmetic number, because the mean of its divisors is an integer number (10110520225).

Almost surely, 2^20221040449 is an apocalyptic number.

It is an amenable number.

20221040449 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221040449 is an equidigital number, since it uses as much as digits as its factorization.

20221040449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 20221040449 in words is "twenty billion, two hundred twenty-one million, forty thousand, four hundred forty-nine".