123011132221 has 8 divisors (see below), whose sum is σ = 123635859200. Its totient is φ = 122387058432.

The previous prime is 123011132203. The next prime is 123011132239. The reversal of 123011132221 is 122231110321.

It is an interprime number because it is at equal distance from previous prime (123011132203) and next prime (123011132239).

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 123011132221 - 2¹¹ = 123011130173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011136221) 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, 216541 + ... + 541213.

It is an arithmetic number, because the mean of its divisors is an integer number (15454482400).

Almost surely, 2^123011132221 is an apocalyptic number.

It is an amenable number.

123011132221 is a deficient number, since it is larger than the sum of its proper divisors (624726979).

123011132221 is a wasteful number, since it uses less digits than its factorization.

123011132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326595.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123011132221 its reverse (122231110321), we get a palindrome (245242242542).

The spelling of 123011132221 in words is "one hundred twenty-three billion, eleven million, one hundred thirty-two thousand, two hundred twenty-one".