211201100102122 has 16 divisors (see below), whose sum is σ = 341171874517320. Its totient is φ = 97477183199232.

The previous prime is 211201100102077. The next prime is 211201100102123. The reversal of 211201100102122 is 221201001102112.

It can be written as a sum of positive squares in 4 ways, for example, as 209057215533721 + 2143884568401 = 14458811^2 + 1464201^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211201100102096 and 211201100102105.

It is not an unprimeable number, because it can be changed into a prime (211201100102123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321654 + ... + 20554942.

Almost surely, 2^{211201100102122} is an apocalyptic number.

211201100102122 is a deficient number, since it is larger than the sum of its proper divisors (129970774415198).

211201100102122 is a wasteful number, since it uses less digits than its factorization.

211201100102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20634777.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211201100102122 its reverse (221201001102112), we get a palindrome (432402101204234).

The spelling of 211201100102122 in words is "two hundred eleven trillion, two hundred one billion, one hundred million, one hundred two thousand, one hundred twenty-two".