223220210120121 has 4 divisors (see below), whose sum is σ = 297626946826832. Its totient is φ = 148813473413412.

The previous prime is 223220210120071. The next prime is 223220210120137. The reversal of 223220210120121 is 121021012022322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 223220210120121 - 2⁷ = 223220210119993 is a prime.

It is a super-3 number, since 3×223220210120121³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223220210120221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37203368353351 + ... + 37203368353356.

It is an arithmetic number, because the mean of its divisors is an integer number (74406736706708).

Almost surely, 2^{223220210120121} is an apocalyptic number.

It is an amenable number.

223220210120121 is a deficient number, since it is larger than the sum of its proper divisors (74406736706711).

223220210120121 is an equidigital number, since it uses as much as digits as its factorization.

223220210120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74406736706710.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 223220210120121 its reverse (121021012022322), we get a palindrome (344241222142443).

The spelling of 223220210120121 in words is "two hundred twenty-three trillion, two hundred twenty billion, two hundred ten million, one hundred twenty thousand, one hundred twenty-one".