121440222321 has 48 divisors (see below), whose sum is σ = 179773440000. Its totient is φ = 72860467680.

The previous prime is 121440222307. The next prime is 121440222353. The reversal of 121440222321 is 123222044121.

It is not a de Polignac number, because 121440222321 - 2¹⁵ = 121440189553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121440222291 and 121440222300.

It is not an unprimeable number, because it can be changed into a prime (121440222121) 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 47 ways as a sum of consecutive naturals, for example, 23001760 + ... + 23007038.

It is an arithmetic number, because the mean of its divisors is an integer number (3745280000).

Almost surely, 2^121440222321 is an apocalyptic number.

121440222321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121440222321 is a deficient number, since it is larger than the sum of its proper divisors (58333217679).

121440222321 is a wasteful number, since it uses less digits than its factorization.

121440222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5930 (or 5919 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 121440222321 its reverse (123222044121), we get a palindrome (244662266442).

The spelling of 121440222321 in words is "one hundred twenty-one billion, four hundred forty million, two hundred twenty-two thousand, three hundred twenty-one".