122221121110201 has 4 divisors (see below), whose sum is σ = 122222569500900. Its totient is φ = 122219672719504.

The previous prime is 122221121110199. The next prime is 122221121110301. The reversal of 122221121110201 is 102011121122221.

It is a happy number.

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 71126874005625 + 51094247104576 = 8433675^2 + 7148024^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221121110201 - 2¹ = 122221121110199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122221121110301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724068766 + ... + 724237543.

It is an arithmetic number, because the mean of its divisors is an integer number (30555642375225).

Almost surely, 2^{122221121110201} is an apocalyptic number.

It is an amenable number.

122221121110201 is a deficient number, since it is larger than the sum of its proper divisors (1448390699).

122221121110201 is an equidigital number, since it uses as much as digits as its factorization.

122221121110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448390698.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122221121110201 its reverse (102011121122221), we get a palindrome (224232242232422).

The spelling of 122221121110201 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred one".