21340134322 has 16 divisors (see below), whose sum is σ = 34703890200. Its totient is φ = 9783188352.

The previous prime is 21340134313. The next prime is 21340134349. The reversal of 21340134322 is 22343104312.

It can be written as a sum of positive squares in 4 ways, for example, as 17816643441 + 3523490881 = 133479^2 + 59359^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2750403 + ... + 2758150.

Almost surely, 2^21340134322 is an apocalyptic number.

21340134322 is a deficient number, since it is larger than the sum of its proper divisors (13363755878).

21340134322 is a wasteful number, since it uses less digits than its factorization.

21340134322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508717.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21340134322 its reverse (22343104312), we get a palindrome (43683238634).

The spelling of 21340134322 in words is "twenty-one billion, three hundred forty million, one hundred thirty-four thousand, three hundred twenty-two".