1223202023221 has 8 divisors (see below), whose sum is σ = 1258620731064. Its totient is φ = 1188240331200.

The previous prime is 1223202023209. The next prime is 1223202023231.

1223202023221 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 306156382596 + 917045640625 = 553314^2 + 957625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223202023221 - 2³⁷ = 1085763069749 is a prime.

It is a super-2 number, since 2×1223202023221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223202023192 and 1223202023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223202023231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114248526 + ... + 114259231.

It is an arithmetic number, because the mean of its divisors is an integer number (157327591383).

Almost surely, 2^{1223202023221} is an apocalyptic number.

It is an amenable number.

1223202023221 is a deficient number, since it is larger than the sum of its proper divisors (35418707843).

1223202023221 is a wasteful number, since it uses less digits than its factorization.

1223202023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228507911.

The product of its (nonzero) digits is 1152, while the sum is 22.

The spelling of 1223202023221 in words is "one trillion, two hundred twenty-three billion, two hundred two million, twenty-three thousand, two hundred twenty-one".