123011332421 has 8 divisors (see below), whose sum is σ = 123310987800. Its totient is φ = 122711749632.

The previous prime is 123011332417. The next prime is 123011332453. The reversal of 123011332421 is 124233110321.

It can be written as a sum of positive squares in 4 ways, for example, as 1527715396 + 121483617025 = 39086^2 + 348545^2 .

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 123011332421 - 2² = 123011332417 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 (123011332021) 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, 5103005 + ... + 5127053.

It is an arithmetic number, because the mean of its divisors is an integer number (15413873475).

Almost surely, 2^123011332421 is an apocalyptic number.

It is an amenable number.

123011332421 is a deficient number, since it is larger than the sum of its proper divisors (299655379).

123011332421 is a wasteful number, since it uses less digits than its factorization.

123011332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36295.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123011332421 its reverse (124233110321), we get a palindrome (247244442742).

The spelling of 123011332421 in words is "one hundred twenty-three billion, eleven million, three hundred thirty-two thousand, four hundred twenty-one".