223201122021 has 16 divisors (see below), whose sum is σ = 337703827200. Its totient is φ = 145634773824.

The previous prime is 223201121993. The next prime is 223201122037. The reversal of 223201122021 is 120221102322.

223201122021 is a `hidden beast` number, since 223 + 201 + 1 + 220 + 21 = 666.

It is not a de Polignac number, because 223201122021 - 2⁷ = 223201121893 is a prime.

It is a super-3 number, since 3×223201122021³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 223201121985 and 223201122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223201122721) 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, 87942436 + ... + 87944973.

It is an arithmetic number, because the mean of its divisors is an integer number (21106489200).

Almost surely, 2^223201122021 is an apocalyptic number.

It is an amenable number.

223201122021 is a deficient number, since it is larger than the sum of its proper divisors (114502705179).

223201122021 is a wasteful number, since it uses less digits than its factorization.

223201122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175887465 (or 175887459 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 223201122021 its reverse (120221102322), we get a palindrome (343422224343).

The spelling of 223201122021 in words is "two hundred twenty-three billion, two hundred one million, one hundred twenty-two thousand, twenty-one".