11220121222101 has 32 divisors (see below), whose sum is σ = 18475671335040. Its totient is φ = 6671770185600.

The previous prime is 11220121222099. The next prime is 11220121222169. The reversal of 11220121222101 is 10122212102211.

11220121222101 is a `hidden beast` number, since 1 + 1 + 220 + 121 + 222 + 101 = 666.

It is not a de Polignac number, because 11220121222101 - 2¹ = 11220121222099 is a prime.

It is a super-2 number, since 2×11220121222101² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220121222181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356382240 + ... + 356413721.

It is an arithmetic number, because the mean of its divisors is an integer number (577364729220).

Almost surely, 2^{11220121222101} is an apocalyptic number.

11220121222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220121222101 is a deficient number, since it is larger than the sum of its proper divisors (7255550112939).

11220121222101 is a wasteful number, since it uses less digits than its factorization.

11220121222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712796034 (or 712796028 counting only the distinct ones).

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

Adding to 11220121222101 its reverse (10122212102211), we get a palindrome (21342333324312).

The spelling of 11220121222101 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred one".