21101211322 has 8 divisors (see below), whose sum is σ = 31673970900. Its totient is φ = 10543221024.

The previous prime is 21101211283. The next prime is 21101211323. The reversal of 21101211322 is 22311210112.

It can be written as a sum of positive squares in 2 ways, for example, as 14706170361 + 6395040961 = 121269^2 + 79969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21101211322² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21101211296 and 21101211305.

It is not an unprimeable number, because it can be changed into a prime (21101211323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3688747 + ... + 3694462.

Almost surely, 2^21101211322 is an apocalyptic number.

21101211322 is a deficient number, since it is larger than the sum of its proper divisors (10572759578).

21101211322 is a wasteful number, since it uses less digits than its factorization.

21101211322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384640.

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

Adding to 21101211322 its reverse (22311210112), we get a palindrome (43412421434).

The spelling of 21101211322 in words is "twenty-one billion, one hundred one million, two hundred eleven thousand, three hundred twenty-two".