11220002121 has 16 divisors (see below), whose sum is σ = 15225418368. Its totient is φ = 7347619200.

The previous prime is 11220002119. The next prime is 11220002141. The reversal of 11220002121 is 12120002211.

It is not a de Polignac number, because 11220002121 - 2¹ = 11220002119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11220002097 and 11220002106.

It is not an unprimeable number, because it can be changed into a prime (11220002141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98980 + ... + 179546.

It is an arithmetic number, because the mean of its divisors is an integer number (951588648).

Almost surely, 2^11220002121 is an apocalyptic number.

It is an amenable number.

11220002121 is a deficient number, since it is larger than the sum of its proper divisors (4005416247).

11220002121 is an equidigital number, since it uses as much as digits as its factorization.

11220002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81392.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11220002121 its reverse (12120002211), we get a palindrome (23340004332).

The spelling of 11220002121 in words is "eleven billion, two hundred twenty million, two thousand, one hundred twenty-one".