29520245221 has 16 divisors (see below), whose sum is σ = 32110062768. Its totient is φ = 27029094400.

The previous prime is 29520245203. The next prime is 29520245243. The reversal of 29520245221 is 12254202592.

It can be written as a sum of positive squares in 8 ways, for example, as 7159528996 + 22360716225 = 84614^2 + 149535^2 .

It is a cyclic number.

It is not a de Polignac number, because 29520245221 - 2⁵ = 29520245189 is a prime.

It is a super-3 number, since 3×29520245221³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29520245021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186051 + ... + 306031.

It is an arithmetic number, because the mean of its divisors is an integer number (2006878923).

Almost surely, 2^29520245221 is an apocalyptic number.

It is an amenable number.

29520245221 is a deficient number, since it is larger than the sum of its proper divisors (2589817547).

29520245221 is a wasteful number, since it uses less digits than its factorization.

29520245221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120392.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 29520245221 in words is "twenty-nine billion, five hundred twenty million, two hundred forty-five thousand, two hundred twenty-one".