21101321122 has 16 divisors (see below), whose sum is σ = 36184737600. Its totient is φ = 9040662288.

The previous prime is 21101321107. The next prime is 21101321123. The reversal of 21101321122 is 22112310112.

It is a junction number, because it is equal to n+sod(n) for n = 21101321096 and 21101321105.

It is not an unprimeable number, because it can be changed into a prime (21101321123) 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, 182253 + ... + 274624.

It is an arithmetic number, because the mean of its divisors is an integer number (2261546100).

Almost surely, 2^21101321122 is an apocalyptic number.

21101321122 is a deficient number, since it is larger than the sum of its proper divisors (15083416478).

21101321122 is a wasteful number, since it uses less digits than its factorization.

21101321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460185.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21101321122 its reverse (22112310112), we get a palindrome (43213631234).

The spelling of 21101321122 in words is "twenty-one billion, one hundred one million, three hundred twenty-one thousand, one hundred twenty-two".