223202220021 has 48 divisors (see below), whose sum is σ = 363053104128. Its totient is φ = 130949481600.

The previous prime is 223202220019. The next prime is 223202220023. The reversal of 223202220021 is 120022202322.

223202220021 is a `hidden beast` number, since 223 + 202 + 220 + 0 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (223202220019) and next prime (223202220023).

It is not a de Polignac number, because 223202220021 - 2¹ = 223202220019 is a prime.

It is a super-3 number, since 3×223202220021³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223202219976 and 223202220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223202220023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 566956 + ... + 876266.

It is an arithmetic number, because the mean of its divisors is an integer number (7563606336).

Almost surely, 2^223202220021 is an apocalyptic number.

It is an amenable number.

223202220021 is a deficient number, since it is larger than the sum of its proper divisors (139850884107).

223202220021 is a wasteful number, since it uses less digits than its factorization.

223202220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309562 (or 309559 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 223202220021 its reverse (120022202322), we get a palindrome (343224422343).

The spelling of 223202220021 in words is "two hundred twenty-three billion, two hundred two million, two hundred twenty thousand, twenty-one".