123122010221 has 4 divisors (see below), whose sum is σ = 140710868832. Its totient is φ = 105533151612.

The previous prime is 123122010203. The next prime is 123122010223. The reversal of 123122010221 is 122010221321.

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 123122010221 - 2¹⁴ = 123121993837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123122010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123122010223) 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, 8794429295 + ... + 8794429308.

It is an arithmetic number, because the mean of its divisors is an integer number (35177717208).

Almost surely, 2^123122010221 is an apocalyptic number.

It is an amenable number.

123122010221 is a deficient number, since it is larger than the sum of its proper divisors (17588858611).

123122010221 is an equidigital number, since it uses as much as digits as its factorization.

123122010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17588858610.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123122010221 its reverse (122010221321), we get a palindrome (245132231542).

The spelling of 123122010221 in words is "one hundred twenty-three billion, one hundred twenty-two million, ten thousand, two hundred twenty-one".