29411221009 has 9 divisors (see below), whose sum is σ = 29558930961. Its totient is φ = 29264248080.

The previous prime is 29411220913. The next prime is 29411221031. The reversal of 29411221009 is 90012211492.

It is a happy number.

The square root of 29411221009 is 171497.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10771326225 + 18639894784 = 103785^2 + 136528^2 .

It is not a de Polignac number, because 29411221009 - 2³³ = 20821286417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29411221039) 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 in 8 ways as a sum of consecutive naturals, for example, 54364279 + ... + 54364819.

Almost surely, 2^29411221009 is an apocalyptic number.

29411221009 is the 171497-th square number.

29411221009 is the 85749-th centered octagonal number.

It is an amenable number.

29411221009 is a deficient number, since it is larger than the sum of its proper divisors (147709952).

29411221009 is an frugal number, since it uses more digits than its factorization.

29411221009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 29411221009 in words is "twenty-nine billion, four hundred eleven million, two hundred twenty-one thousand, nine".