22121541321 has 8 divisors (see below), whose sum is σ = 32176787424. Its totient is φ = 13406994720.

The previous prime is 22121541287. The next prime is 22121541373. The reversal of 22121541321 is 12314512122.

It is a happy number.

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

It is not a de Polignac number, because 22121541321 - 2¹⁰ = 22121540297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121541291 and 22121541300.

It is not an unprimeable number, because it can be changed into a prime (22121543321) 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, 335174836 + ... + 335174901.

It is an arithmetic number, because the mean of its divisors is an integer number (4022098428).

Almost surely, 2^22121541321 is an apocalyptic number.

It is an amenable number.

22121541321 is a deficient number, since it is larger than the sum of its proper divisors (10055246103).

22121541321 is a wasteful number, since it uses less digits than its factorization.

22121541321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670349751.

The product of its digits is 960, while the sum is 24.

The spelling of 22121541321 in words is "twenty-two billion, one hundred twenty-one million, five hundred forty-one thousand, three hundred twenty-one".