11012200002121 has 4 divisors (see below), whose sum is σ = 11659976472852. Its totient is φ = 10364423531392.

The previous prime is 11012200002113. The next prime is 11012200002157. The reversal of 11012200002121 is 12120000221011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3917094097225 + 7095105904896 = 1979165^2 + 2663664^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012200002121 - 2³ = 11012200002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012200002101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323888235340 + ... + 323888235373.

It is an arithmetic number, because the mean of its divisors is an integer number (2914994118213).

Almost surely, 2^{11012200002121} is an apocalyptic number.

It is an amenable number.

11012200002121 is a deficient number, since it is larger than the sum of its proper divisors (647776470731).

11012200002121 is an equidigital number, since it uses as much as digits as its factorization.

11012200002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647776470730.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11012200002121 its reverse (12120000221011), we get a palindrome (23132200223132).

The spelling of 11012200002121 in words is "eleven trillion, twelve billion, two hundred million, two thousand, one hundred twenty-one".