123235221541 has 4 divisors (see below), whose sum is σ = 123244192000. Its totient is φ = 123226251084.

The previous prime is 123235221523. The next prime is 123235221559. The reversal of 123235221541 is 145122532321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (123235221523) and next prime (123235221559).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123235221541 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 (123235221841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4464591 + ... + 4492108.

It is an arithmetic number, because the mean of its divisors is an integer number (30811048000).

Almost surely, 2^123235221541 is an apocalyptic number.

It is an amenable number.

123235221541 is a deficient number, since it is larger than the sum of its proper divisors (8970459).

123235221541 is an equidigital number, since it uses as much as digits as its factorization.

123235221541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970458.

The product of its digits is 14400, while the sum is 31.

Adding to 123235221541 its reverse (145122532321), we get a palindrome (268357753862).

The spelling of 123235221541 in words is "one hundred twenty-three billion, two hundred thirty-five million, two hundred twenty-one thousand, five hundred forty-one".