223111012021 has 16 divisors (see below), whose sum is σ = 228469920768. Its totient is φ = 217835280000.

The previous prime is 223111012013. The next prime is 223111012037. The reversal of 223111012021 is 120210111322.

It is a cyclic number.

It is not a de Polignac number, because 223111012021 - 2³ = 223111012013 is a prime.

It is a super-3 number, since 3×223111012021³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223111011986 and 223111012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223111012921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2035996 + ... + 2142778.

It is an arithmetic number, because the mean of its divisors is an integer number (14279370048).

Almost surely, 2^223111012021 is an apocalyptic number.

It is an amenable number.

223111012021 is a deficient number, since it is larger than the sum of its proper divisors (5358908747).

223111012021 is a wasteful number, since it uses less digits than its factorization.

223111012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107172.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 223111012021 its reverse (120210111322), we get a palindrome (343321123343).

The spelling of 223111012021 in words is "two hundred twenty-three billion, one hundred eleven million, twelve thousand, twenty-one".