122100111100001 has 4 divisors (see below), whose sum is σ = 122100134195604. Its totient is φ = 122100088004400.

The previous prime is 122100111099997. The next prime is 122100111100039. The reversal of 122100111100001 is 100001111001221.

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 74388986259025 + 47711124840976 = 8624905^2 + 6907324^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100111100001 - 2² = 122100111099997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100111100301) 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, 742391 + ... + 15644531.

It is an arithmetic number, because the mean of its divisors is an integer number (30525033548901).

Almost surely, 2^{122100111100001} is an apocalyptic number.

It is an amenable number.

122100111100001 is a deficient number, since it is larger than the sum of its proper divisors (23095603).

122100111100001 is an equidigital number, since it uses as much as digits as its factorization.

122100111100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23095602.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 122100111100001 its reverse (100001111001221), we get a palindrome (222101222101222).

The spelling of 122100111100001 in words is "one hundred twenty-two trillion, one hundred billion, one hundred eleven million, one hundred thousand, one".