223313221021 has 32 divisors (see below), whose sum is σ = 252560931840. Its totient is φ = 195615129600.

The previous prime is 223313220989. The next prime is 223313221051. The reversal of 223313221021 is 120122313322.

It is not a de Polignac number, because 223313221021 - 2⁵ = 223313220989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223313220983 and 223313221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223313221051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138789265 + ... + 138790873.

It is an arithmetic number, because the mean of its divisors is an integer number (7892529120).

Almost surely, 2^223313221021 is an apocalyptic number.

It is an amenable number.

223313221021 is a deficient number, since it is larger than the sum of its proper divisors (29247710819).

223313221021 is a wasteful number, since it uses less digits than its factorization.

223313221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223313221021 its reverse (120122313322), we get a palindrome (343435534343).

The spelling of 223313221021 in words is "two hundred twenty-three billion, three hundred thirteen million, two hundred twenty-one thousand, twenty-one".