23221414451221 has 32 divisors (see below), whose sum is σ = 27954455592960. Its totient is φ = 18843721255296.

The previous prime is 23221414451171. The next prime is 23221414451227. The reversal of 23221414451221 is 12215441412232.

It is not a de Polignac number, because 23221414451221 - 2¹⁵ = 23221414418453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221414451227) 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 31 ways as a sum of consecutive naturals, for example, 1431380316 + ... + 1431396538.

It is an arithmetic number, because the mean of its divisors is an integer number (873576737280).

Almost surely, 2^{23221414451221} is an apocalyptic number.

It is an amenable number.

23221414451221 is a deficient number, since it is larger than the sum of its proper divisors (4733041141739).

23221414451221 is a wasteful number, since it uses less digits than its factorization.

23221414451221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22873.

The product of its digits is 30720, while the sum is 34.

Adding to 23221414451221 its reverse (12215441412232), we get a palindrome (35436855863453).

The spelling of 23221414451221 in words is "twenty-three trillion, two hundred twenty-one billion, four hundred fourteen million, four hundred fifty-one thousand, two hundred twenty-one".