122201212210111 has 4 divisors (see below), whose sum is σ = 122599261761592. Its totient is φ = 121803162658632.

The previous prime is 122201212210109. The next prime is 122201212210123. The reversal of 122201212210111 is 111012212102221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 122201212210111 - 2¹ = 122201212210109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201212210411) 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, 199024775280 + ... + 199024775893.

It is an arithmetic number, because the mean of its divisors is an integer number (30649815440398).

Almost surely, 2^{122201212210111} is an apocalyptic number.

122201212210111 is a deficient number, since it is larger than the sum of its proper divisors (398049551481).

122201212210111 is an equidigital number, since it uses as much as digits as its factorization.

122201212210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398049551480.

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

Adding to 122201212210111 its reverse (111012212102221), we get a palindrome (233213424312332).

The spelling of 122201212210111 in words is "one hundred twenty-two trillion, two hundred one billion, two hundred twelve million, two hundred ten thousand, one hundred eleven".