122100420011 has 4 divisors (see below), whose sum is σ = 122101198800. Its totient is φ = 122099641224.

The previous prime is 122100420007. The next prime is 122100420041. The reversal of 122100420011 is 110024001221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110024001221 = 23 ⋅4783652227.

It is a cyclic number.

It is not a de Polignac number, because 122100420011 - 2² = 122100420007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100420041) 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, 63056 + ... + 498173.

It is an arithmetic number, because the mean of its divisors is an integer number (30525299700).

Almost surely, 2^122100420011 is an apocalyptic number.

122100420011 is a deficient number, since it is larger than the sum of its proper divisors (778789).

122100420011 is an equidigital number, since it uses as much as digits as its factorization.

122100420011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778788.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122100420011 its reverse (110024001221), we get a palindrome (232124421232).

The spelling of 122100420011 in words is "one hundred twenty-two billion, one hundred million, four hundred twenty thousand, eleven".