21347307722 has 32 divisors (see below), whose sum is σ = 36861108480. Its totient is φ = 9194359680.

The previous prime is 21347307721. The next prime is 21347307727. The reversal of 21347307722 is 22770374312.

It is not an unprimeable number, because it can be changed into a prime (21347307721) 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, 410822 + ... + 459857.

It is an arithmetic number, because the mean of its divisors is an integer number (1151909640).

Almost surely, 2^21347307722 is an apocalyptic number.

21347307722 is a deficient number, since it is larger than the sum of its proper divisors (15513800758).

21347307722 is a wasteful number, since it uses less digits than its factorization.

21347307722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870758.

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 21347307722 in words is "twenty-one billion, three hundred forty-seven million, three hundred seven thousand, seven hundred twenty-two".