122100122000221 has 4 divisors (see below), whose sum is σ = 122100184198944. Its totient is φ = 122100059801500.

The previous prime is 122100122000177. The next prime is 122100122000243. The reversal of 122100122000221 is 122000221001221.

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 122100122000221 - 2¹⁹ = 122100121475933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122100122000195 and 122100122000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100122003221) 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, 28055455 + ... + 32113996.

It is an arithmetic number, because the mean of its divisors is an integer number (30525046049736).

Almost surely, 2^{122100122000221} is an apocalyptic number.

It is an amenable number.

122100122000221 is a deficient number, since it is larger than the sum of its proper divisors (62198723).

122100122000221 is an equidigital number, since it uses as much as digits as its factorization.

122100122000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62198722.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122100122000221 its reverse (122000221001221), we get a palindrome (244100343001442).

The spelling of 122100122000221 in words is "one hundred twenty-two trillion, one hundred billion, one hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.