29220421266 has 12 divisors (see below), whose sum is σ = 63310912782. Its totient is φ = 9740140416.

The previous prime is 29220421261. The next prime is 29220421267. The reversal of 29220421266 is 66212402292.

It is a happy number.

29220421266 is a `hidden beast` number, since 2 + 9 + 220 + 421 + 2 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23507329041 + 5713092225 = 153321^2 + 75585^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 29220421266.

It is not an unprimeable number, because it can be changed into a prime (29220421261) 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 in 5 ways as a sum of consecutive naturals, for example, 811678351 + ... + 811678386.

Almost surely, 2^29220421266 is an apocalyptic number.

29220421266 is an abundant number, since it is smaller than the sum of its proper divisors (34090491516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29220421266 is a wasteful number, since it uses less digits than its factorization.

29220421266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623356745 (or 1623356742 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 29220421266 in words is "twenty-nine billion, two hundred twenty million, four hundred twenty-one thousand, two hundred sixty-six".