22131661110321 has 8 divisors (see below), whose sum is σ = 33724435977664. Its totient is φ = 12646663491600.

The previous prime is 22131661110311. The next prime is 22131661110353. The reversal of 22131661110321 is 12301116613122.

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

It is not a de Polignac number, because 22131661110321 - 2⁶ = 22131661110257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131661110311) 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, 526944312130 + ... + 526944312171.

It is an arithmetic number, because the mean of its divisors is an integer number (4215554497208).

Almost surely, 2^{22131661110321} is an apocalyptic number.

22131661110321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22131661110321 is a deficient number, since it is larger than the sum of its proper divisors (11592774867343).

22131661110321 is a wasteful number, since it uses less digits than its factorization.

22131661110321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053888624311.

The product of its (nonzero) digits is 2592, while the sum is 30.

Adding to 22131661110321 its reverse (12301116613122), we get a palindrome (34432777723443).

The spelling of 22131661110321 in words is "twenty-two trillion, one hundred thirty-one billion, six hundred sixty-one million, one hundred ten thousand, three hundred twenty-one".