29221388897 has 2 divisors, whose sum is σ = 29221388898. Its totient is φ = 29221388896.

The previous prime is 29221388881. The next prime is 29221388939. The reversal of 29221388897 is 79888312292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28113564241 + 1107824656 = 167671^2 + 33284^2 .

It is a cyclic number.

It is not a de Polignac number, because 29221388897 - 2⁴ = 29221388881 is a prime.

It is not a weakly prime, because it can be changed into another prime (29221388837) 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, 14610694448 + 14610694449.

It is an arithmetic number, because the mean of its divisors is an integer number (14610694449).

Almost surely, 2^29221388897 is an apocalyptic number.

It is an amenable number.

29221388897 is a deficient number, since it is larger than the sum of its proper divisors (1).

29221388897 is an equidigital number, since it uses as much as digits as its factorization.

29221388897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 59.

The spelling of 29221388897 in words is "twenty-nine billion, two hundred twenty-one million, three hundred eighty-eight thousand, eight hundred ninety-seven".