122235621 has 4 divisors (see below), whose sum is σ = 162980832. Its totient is φ = 81490412.

The previous prime is 122235613. The next prime is 122235689. The reversal of 122235621 is 126532221.

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 122235621 - 2³ = 122235613 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122235591 and 122235600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122235601) 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, 20372601 + ... + 20372606.

It is an arithmetic number, because the mean of its divisors is an integer number (40745208).

Almost surely, 2^122235621 is an apocalyptic number.

It is an amenable number.

122235621 is a deficient number, since it is larger than the sum of its proper divisors (40745211).

122235621 is an equidigital number, since it uses as much as digits as its factorization.

122235621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40745210.

The product of its digits is 1440, while the sum is 24.

The square root of 122235621 is about 11056.0219337698. The cubic root of 122235621 is about 496.2866516930.

Adding to 122235621 its reverse (126532221), we get a palindrome (248767842).

The spelling of 122235621 in words is "one hundred twenty-two million, two hundred thirty-five thousand, six hundred twenty-one".