223021313213121 has 24 divisors (see below), whose sum is σ = 341842219598880. Its totient is φ = 145223180690112.

The previous prime is 223021313213077. The next prime is 223021313213201. The reversal of 223021313213121 is 121312313120322.

223021313213121 is a `hidden beast` number, since 2 + 2 + 3 + 0 + 21 + 3 + 1 + 321 + 312 + 1 = 666.

It is not a de Polignac number, because 223021313213121 - 2⁶ = 223021313213057 is a prime.

It is a super-2 number, since 2×223021313213121² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (223021313213021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10671887016 + ... + 10671907913.

It is an arithmetic number, because the mean of its divisors is an integer number (14243425816620).

Almost surely, 2^{223021313213121} is an apocalyptic number.

It is an amenable number.

223021313213121 is a deficient number, since it is larger than the sum of its proper divisors (118820906385759).

223021313213121 is an equidigital number, since it uses as much as digits as its factorization.

223021313213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21343794987 (or 21343794975 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 223021313213121 its reverse (121312313120322), we get a palindrome (344333626333443).

The spelling of 223021313213121 in words is "two hundred twenty-three trillion, twenty-one billion, three hundred thirteen million, two hundred thirteen thousand, one hundred twenty-one".