21011322111322 has 4 divisors (see below), whose sum is σ = 31516983166986. Its totient is φ = 10505661055660.

The previous prime is 21011322111317. The next prime is 21011322111341. The reversal of 21011322111322 is 22311122311012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19449149594161 + 1562172517161 = 4410119^2 + 1249869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21011322111293 and 21011322111302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252830527829 + ... + 5252830527832.

Almost surely, 2^{21011322111322} is an apocalyptic number.

21011322111322 is a deficient number, since it is larger than the sum of its proper divisors (10505661055664).

21011322111322 is a wasteful number, since it uses less digits than its factorization.

21011322111322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505661055663.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21011322111322 its reverse (22311122311012), we get a palindrome (43322444422334).

The spelling of 21011322111322 in words is "twenty-one trillion, eleven billion, three hundred twenty-two million, one hundred eleven thousand, three hundred twenty-two".