123012120221 has 8 divisors (see below), whose sum is σ = 127259076000. Its totient is φ = 118765508400.

The previous prime is 123012120167. The next prime is 123012120227. The reversal of 123012120221 is 122021210321.

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 123012120221 - 2¹⁸ = 123011858077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123012120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012120227) 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, 794630 + ... + 936728.

It is an arithmetic number, because the mean of its divisors is an integer number (15907384500).

Almost surely, 2^123012120221 is an apocalyptic number.

It is an amenable number.

123012120221 is a deficient number, since it is larger than the sum of its proper divisors (4246955779).

123012120221 is a wasteful number, since it uses less digits than its factorization.

123012120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171979.

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

Adding to 123012120221 its reverse (122021210321), we get a palindrome (245033330542).

The spelling of 123012120221 in words is "one hundred twenty-three billion, twelve million, one hundred twenty thousand, two hundred twenty-one".