123214121 has 6 divisors (see below), whose sum is σ = 123931566. Its totient is φ = 122500800.

The previous prime is 123214099. The next prime is 123214123. The reversal of 123214121 is 121412321.

It can be written as a sum of positive squares in 3 ways, for example, as 11806096 + 111408025 = 3436^2 + 10555^2 .

It is not a de Polignac number, because 123214121 - 2¹⁸ = 122951977 is a prime.

It is a super-2 number, since 2×123214121² = 30363439227605282, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 123214121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123214123) 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, 30881 + ... + 34641.

It is an arithmetic number, because the mean of its divisors is an integer number (20655261).

Almost surely, 2^123214121 is an apocalyptic number.

It is an amenable number.

123214121 is a deficient number, since it is larger than the sum of its proper divisors (717445).

123214121 is an frugal number, since it uses more digits than its factorization.

123214121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123 (or 3942 counting only the distinct ones).

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

The square root of 123214121 is about 11100.1856290785. The cubic root of 123214121 is about 497.6073971654.

Adding to 123214121 its reverse (121412321), we get a palindrome (244626442).

The spelling of 123214121 in words is "one hundred twenty-three million, two hundred fourteen thousand, one hundred twenty-one".