122443402000421 has 4 divisors (see below), whose sum is σ = 122555632434144. Its totient is φ = 122331171566700.

The previous prime is 122443402000417. The next prime is 122443402000441. The reversal of 122443402000421 is 124000204344221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122443402000421 - 2² = 122443402000417 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 (122443402000441) 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, 56115215225 + ... + 56115217406.

It is an arithmetic number, because the mean of its divisors is an integer number (30638908108536).

Almost surely, 2^{122443402000421} is an apocalyptic number.

It is an amenable number.

122443402000421 is a deficient number, since it is larger than the sum of its proper divisors (112230433723).

122443402000421 is a wasteful number, since it uses less digits than its factorization.

122443402000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112230433722.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 122443402000421 its reverse (124000204344221), we get a palindrome (246443606344642).

The spelling of 122443402000421 in words is "one hundred twenty-two trillion, four hundred forty-three billion, four hundred two million, four hundred twenty-one", and thus it is an aban number.