21323011330 has 16 divisors (see below), whose sum is σ = 38449603584. Its totient is φ = 8514052720.

The previous prime is 21323011273. The next prime is 21323011331. The reversal of 21323011330 is 3311032312.

It is a junction number, because it is equal to n+sod(n) for n = 21323011298 and 21323011307.

It is not an unprimeable number, because it can be changed into a prime (21323011331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1888066 + ... + 1899325.

It is an arithmetic number, because the mean of its divisors is an integer number (2403100224).

Almost surely, 2^21323011330 is an apocalyptic number.

21323011330 is a deficient number, since it is larger than the sum of its proper divisors (17126592254).

21323011330 is a wasteful number, since it uses less digits than its factorization.

21323011330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787961.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21323011330 its reverse (3311032312), we get a palindrome (24634043642).

The spelling of 21323011330 in words is "twenty-one billion, three hundred twenty-three million, eleven thousand, three hundred thirty".