122210000021 has 8 divisors (see below), whose sum is σ = 124567624224. Its totient is φ = 119854293520.

The previous prime is 122209999949. The next prime is 122210000039. The reversal of 122210000021 is 120000012221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122210000021 - 2¹⁸ = 122209737877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122209999957 and 122210000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122210000041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350411 + ... + 605976.

It is an arithmetic number, because the mean of its divisors is an integer number (15570953028).

Almost surely, 2^122210000021 is an apocalyptic number.

It is an amenable number.

122210000021 is a deficient number, since it is larger than the sum of its proper divisors (2357624203).

122210000021 is an equidigital number, since it uses as much as digits as its factorization.

122210000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958851.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122210000021 its reverse (120000012221), we get a palindrome (242210012242).

The spelling of 122210000021 in words is "one hundred twenty-two billion, two hundred ten million, twenty-one", and thus it is an aban number.