21323031122 has 16 divisors (see below), whose sum is σ = 32497163712. Its totient is φ = 10491218640.

The previous prime is 21323031109. The next prime is 21323031127. The reversal of 21323031122 is 22113032312.

It is a junction number, because it is equal to n+sod(n) for n = 21323031094 and 21323031103.

It is not an unprimeable number, because it can be changed into a prime (21323031127) 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 7 ways as a sum of consecutive naturals, for example, 69293 + ... + 217824.

It is an arithmetic number, because the mean of its divisors is an integer number (2031072732).

Almost surely, 2^21323031122 is an apocalyptic number.

21323031122 is a deficient number, since it is larger than the sum of its proper divisors (11174132590).

21323031122 is a wasteful number, since it uses less digits than its factorization.

21323031122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287713.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21323031122 its reverse (22113032312), we get a palindrome (43436063434).

The spelling of 21323031122 in words is "twenty-one billion, three hundred twenty-three million, thirty-one thousand, one hundred twenty-two".