122111100205 has 16 divisors (see below), whose sum is σ = 149672162304. Its totient is φ = 95596905600.

The previous prime is 122111100203. The next prime is 122111100217. The reversal of 122111100205 is 502001111221.

It is not a de Polignac number, because 122111100205 - 2¹ = 122111100203 is a prime.

It is a super-2 number, since 2×122111100205² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111100203) 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 15 ways as a sum of consecutive naturals, for example, 1835809 + ... + 1901161.

It is an arithmetic number, because the mean of its divisors is an integer number (9354510144).

Almost surely, 2^122111100205 is an apocalyptic number.

It is an amenable number.

122111100205 is a deficient number, since it is larger than the sum of its proper divisors (27561062099).

122111100205 is an equidigital number, since it uses as much as digits as its factorization.

122111100205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73356.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 122111100205 its reverse (502001111221), we get a palindrome (624112211426).

The spelling of 122111100205 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred thousand, two hundred five".