21242233329 has 16 divisors (see below), whose sum is σ = 29998874880. Its totient is φ = 13324087040.

The previous prime is 21242233321. The next prime is 21242233333. The reversal of 21242233329 is 92333224212.

It is a cyclic number.

It is not a de Polignac number, because 21242233329 - 2³ = 21242233321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21242233329.

It is not an unprimeable number, because it can be changed into a prime (21242233321) 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, 92299 + ... + 225839.

It is an arithmetic number, because the mean of its divisors is an integer number (1874929680).

Almost surely, 2^21242233329 is an apocalyptic number.

It is an amenable number.

21242233329 is a deficient number, since it is larger than the sum of its proper divisors (8756641551).

21242233329 is a wasteful number, since it uses less digits than its factorization.

21242233329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136680.

The product of its digits is 31104, while the sum is 33.

The spelling of 21242233329 in words is "twenty-one billion, two hundred forty-two million, two hundred thirty-three thousand, three hundred twenty-nine".