123235221051 has 6 divisors (see below), whose sum is σ = 178006430420. Its totient is φ = 82156814028.

The previous prime is 123235221007. The next prime is 123235221077. The reversal of 123235221051 is 150122532321.

123235221051 is a `hidden beast` number, since 1 + 2 + 32 + 3 + 522 + 105 + 1 = 666.

It is not a de Polignac number, because 123235221051 - 2⁷ = 123235220923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123235221091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6846401161 + ... + 6846401178.

Almost surely, 2^123235221051 is an apocalyptic number.

123235221051 is a deficient number, since it is larger than the sum of its proper divisors (54771209369).

123235221051 is a wasteful number, since it uses less digits than its factorization.

123235221051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13692802345 (or 13692802342 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 123235221051 its reverse (150122532321), we get a palindrome (273357753372).

The spelling of 123235221051 in words is "one hundred twenty-three billion, two hundred thirty-five million, two hundred twenty-one thousand, fifty-one".