11021212100121 has 4 divisors (see below), whose sum is σ = 14694949466832. Its totient is φ = 7347474733412.

The previous prime is 11021212100111. The next prime is 11021212100123. The reversal of 11021212100121 is 12100121212011.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11021212100121 - 2⁵ = 11021212100089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11021212100121.

It is not an unprimeable number, because it can be changed into a prime (11021212100123) 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, 1836868683351 + ... + 1836868683356.

It is an arithmetic number, because the mean of its divisors is an integer number (3673737366708).

Almost surely, 2^{11021212100121} is an apocalyptic number.

It is an amenable number.

11021212100121 is a deficient number, since it is larger than the sum of its proper divisors (3673737366711).

11021212100121 is an equidigital number, since it uses as much as digits as its factorization.

11021212100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673737366710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11021212100121 its reverse (12100121212011), we get a palindrome (23121333312132).

The spelling of 11021212100121 in words is "eleven trillion, twenty-one billion, two hundred twelve million, one hundred thousand, one hundred twenty-one".