123001234221 has 4 divisors (see below), whose sum is σ = 164001645632. Its totient is φ = 82000822812.

The previous prime is 123001234183. The next prime is 123001234231. The reversal of 123001234221 is 122432100321.

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 not a de Polignac number, because 123001234221 - 2¹⁴ = 123001217837 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 (123001234231) 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, 20500205701 + ... + 20500205706.

It is an arithmetic number, because the mean of its divisors is an integer number (41000411408).

Almost surely, 2^123001234221 is an apocalyptic number.

It is an amenable number.

123001234221 is a deficient number, since it is larger than the sum of its proper divisors (41000411411).

123001234221 is an equidigital number, since it uses as much as digits as its factorization.

123001234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41000411410.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 123001234221 its reverse (122432100321), we get a palindrome (245433334542).

The spelling of 123001234221 in words is "one hundred twenty-three billion, one million, two hundred thirty-four thousand, two hundred twenty-one".