11002121201 has 4 divisors (see below), whose sum is σ = 11002762992. Its totient is φ = 11001479412.

The previous prime is 11002121167. The next prime is 11002121213. The reversal of 11002121201 is 10212120011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10212120011 = 15913 ⋅641747.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002121201 is a prime.

It is a super-3 number, since 3×11002121201³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11002120201) 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 3 ways as a sum of consecutive naturals, for example, 294455 + ... + 329708.

It is an arithmetic number, because the mean of its divisors is an integer number (2750690748).

Almost surely, 2^11002121201 is an apocalyptic number.

It is an amenable number.

11002121201 is a deficient number, since it is larger than the sum of its proper divisors (641791).

11002121201 is an equidigital number, since it uses as much as digits as its factorization.

11002121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641790.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11002121201 its reverse (10212120011), we get a palindrome (21214241212).

The spelling of 11002121201 in words is "eleven billion, two million, one hundred twenty-one thousand, two hundred one".