122321215123421 has 4 divisors (see below), whose sum is σ = 122321510726592. Its totient is φ = 122320919520252.

The previous prime is 122321215123417. The next prime is 122321215123441. The reversal of 122321215123421 is 124321512123221.

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 122321215123421 - 2² = 122321215123417 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 (122321215123441) 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, 147180011 + ... + 148008776.

It is an arithmetic number, because the mean of its divisors is an integer number (30580377681648).

Almost surely, 2^{122321215123421} is an apocalyptic number.

It is an amenable number.

122321215123421 is a deficient number, since it is larger than the sum of its proper divisors (295603171).

122321215123421 is an equidigital number, since it uses as much as digits as its factorization.

122321215123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295603170.

The product of its digits is 11520, while the sum is 32.

Adding to 122321215123421 its reverse (124321512123221), we get a palindrome (246642727246642).

The spelling of 122321215123421 in words is "one hundred twenty-two trillion, three hundred twenty-one billion, two hundred fifteen million, one hundred twenty-three thousand, four hundred twenty-one".