11220121003 has 16 divisors (see below), whose sum is σ = 13860745920. Its totient is φ = 8844437376.

The previous prime is 11220121001. The next prime is 11220121051. The reversal of 11220121003 is 30012102211.

It is a cyclic number.

It is not a de Polignac number, because 11220121003 - 2¹ = 11220121001 is a prime.

It is a super-2 number, since 2×11220121003² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (11220121001) 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, 204700 + ... + 253657.

It is an arithmetic number, because the mean of its divisors is an integer number (866296620).

Almost surely, 2^11220121003 is an apocalyptic number.

11220121003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11220121003 is a deficient number, since it is larger than the sum of its proper divisors (2640624917).

11220121003 is a wasteful number, since it uses less digits than its factorization.

11220121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458646.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11220121003 its reverse (30012102211), we get a palindrome (41232223214).

The spelling of 11220121003 in words is "eleven billion, two hundred twenty million, one hundred twenty-one thousand, three".