223101313021 has 4 divisors (see below), whose sum is σ = 223102439100. Its totient is φ = 223100186944.

The previous prime is 223101312997. The next prime is 223101313031. The reversal of 223101313021 is 120313101322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120313101322 = 2 ⋅60156550661.

It can be written as a sum of positive squares in 2 ways, for example, as 24551756100 + 198549556921 = 156690^2 + 445589^2 .

It is a cyclic number.

It is not a de Polignac number, because 223101313021 - 2²⁷ = 222967095293 is a prime.

It is a super-3 number, since 3×223101313021³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223101313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223101313031) 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, 178156 + ... + 691333.

It is an arithmetic number, because the mean of its divisors is an integer number (55775609775).

Almost surely, 2^223101313021 is an apocalyptic number.

It is an amenable number.

223101313021 is a deficient number, since it is larger than the sum of its proper divisors (1126079).

223101313021 is an equidigital number, since it uses as much as digits as its factorization.

223101313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126078.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 223101313021 its reverse (120313101322), we get a palindrome (343414414343).

It can be divided in two parts, 22310 and 1313021, that added together give a palindrome (1335331).

The spelling of 223101313021 in words is "two hundred twenty-three billion, one hundred one million, three hundred thirteen thousand, twenty-one".