11212221202101 has 12 divisors (see below), whose sum is σ = 17148103015212. Its totient is φ = 7035119185536.

The previous prime is 11212221202079. The next prime is 11212221202103. The reversal of 11212221202101 is 10120212221211.

11212221202101 is a `hidden beast` number, since 1 + 1 + 212 + 221 + 20 + 210 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10308761447076 + 903459755025 = 3210726^2 + 950505^2 .

It is not a de Polignac number, because 11212221202101 - 2²³ = 11212212813493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212221202103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36641245606 + ... + 36641245911.

It is an arithmetic number, because the mean of its divisors is an integer number (1429008584601).

Almost surely, 2^{11212221202101} is an apocalyptic number.

It is an amenable number.

11212221202101 is a deficient number, since it is larger than the sum of its proper divisors (5935881813111).

11212221202101 is a wasteful number, since it uses less digits than its factorization.

11212221202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73282491540 (or 73282491537 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212221202101 its reverse (10120212221211), we get a palindrome (21332433423312).

The spelling of 11212221202101 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, two hundred two thousand, one hundred one".