122333300021 has 4 divisors (see below), whose sum is σ = 122361050700. Its totient is φ = 122305549344.

The previous prime is 122333299997. The next prime is 122333300027. The reversal of 122333300021 is 120003333221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5074995121 + 117258304900 = 71239^2 + 342430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122333300021 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 = 122333299966 and 122333300002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122333300027) 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, 13868726 + ... + 13877543.

It is an arithmetic number, because the mean of its divisors is an integer number (30590262675).

Almost surely, 2^122333300021 is an apocalyptic number.

It is an amenable number.

122333300021 is a deficient number, since it is larger than the sum of its proper divisors (27750679).

122333300021 is an equidigital number, since it uses as much as digits as its factorization.

122333300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27750678.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 122333300021 its reverse (120003333221), we get a palindrome (242336633242).

The spelling of 122333300021 in words is "one hundred twenty-two billion, three hundred thirty-three million, three hundred thousand, twenty-one".