11220100100121 has 48 divisors (see below), whose sum is σ = 16562683767168. Its totient is φ = 6751067938560.

The previous prime is 11220100100119. The next prime is 11220100100147. The reversal of 11220100100121 is 12100100102211.

It is not a de Polignac number, because 11220100100121 - 2¹ = 11220100100119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220100100097 and 11220100100106.

It is not an unprimeable number, because it can be changed into a prime (11220102100121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27771861 + ... + 28172973.

It is an arithmetic number, because the mean of its divisors is an integer number (345055911816).

Almost surely, 2^{11220100100121} is an apocalyptic number.

11220100100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220100100121 is a deficient number, since it is larger than the sum of its proper divisors (5342583667047).

11220100100121 is a wasteful number, since it uses less digits than its factorization.

11220100100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401694 (or 401683 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11220100100121 its reverse (12100100102211), we get a palindrome (23320200202332).

The spelling of 11220100100121 in words is "eleven trillion, two hundred twenty billion, one hundred million, one hundred thousand, one hundred twenty-one".