21322011121 has 8 divisors (see below), whose sum is σ = 21898094400. Its totient is φ = 20753084400.

The previous prime is 21322011119. The next prime is 21322011143. The reversal of 21322011121 is 12111022312.

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

It is a cyclic number.

It is not a de Polignac number, because 21322011121 - 2¹ = 21322011119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322011095 and 21322011104.

It is not an unprimeable number, because it can be changed into a prime (21322011181) 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, 1783101 + ... + 1795018.

It is an arithmetic number, because the mean of its divisors is an integer number (2737261800).

Almost surely, 2^21322011121 is an apocalyptic number.

It is an amenable number.

21322011121 is a deficient number, since it is larger than the sum of its proper divisors (576083279).

21322011121 is a wasteful number, since it uses less digits than its factorization.

21322011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578279.

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

Adding to 21322011121 its reverse (12111022312), we get a palindrome (33433033433).

The spelling of 21322011121 in words is "twenty-one billion, three hundred twenty-two million, eleven thousand, one hundred twenty-one".