122012321 has 4 divisors (see below), whose sum is σ = 122034432. Its totient is φ = 121990212.

The previous prime is 122012299. The next prime is 122012327. The reversal of 122012321 is 123210221.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 123210221 = 109 ⋅1130369.

It is a cyclic number.

It is not a de Polignac number, because 122012321 - 2⁶ = 122012257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122012296 and 122012305.

It is not an unprimeable number, because it can be changed into a prime (122012327) 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, 4856 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (30508608).

Almost surely, 2^122012321 is an apocalyptic number.

It is an amenable number.

122012321 is a deficient number, since it is larger than the sum of its proper divisors (22111).

122012321 is a wasteful number, since it uses less digits than its factorization.

122012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22110.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 122012321 is about 11045.9187485695. The cubic root of 122012321 is about 495.9842620418.

Adding to 122012321 its reverse (123210221), we get a palindrome (245222542).

The spelling of 122012321 in words is "one hundred twenty-two million, twelve thousand, three hundred twenty-one".