21112322021321 has 8 divisors (see below), whose sum is σ = 21319942013760. Its totient is φ = 20904752913552.

The previous prime is 21112322021303. The next prime is 21112322021387. The reversal of 21112322021321 is 12312022321112.

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 21112322021321 - 2³⁰ = 21111248279497 is a prime.

It is a super-2 number, since 2×21112322021321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112322023321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11887010 + ... + 13547163.

It is an arithmetic number, because the mean of its divisors is an integer number (2664992751720).

Almost surely, 2^{21112322021321} is an apocalyptic number.

It is an amenable number.

21112322021321 is a deficient number, since it is larger than the sum of its proper divisors (207619992439).

21112322021321 is a wasteful number, since it uses less digits than its factorization.

21112322021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25442335.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21112322021321 its reverse (12312022321112), we get a palindrome (33424344342433).

The spelling of 21112322021321 in words is "twenty-one trillion, one hundred twelve billion, three hundred twenty-two million, twenty-one thousand, three hundred twenty-one".