11012122100221 has 4 divisors (see below), whose sum is σ = 12013224109344. Its totient is φ = 10011020091100.

The previous prime is 11012122100143. The next prime is 11012122100257. The reversal of 11012122100221 is 12200122121011.

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 11012122100221 - 2⁹ = 11012122099709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012122100195 and 11012122100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012122100521) 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, 500551004545 + ... + 500551004566.

It is an arithmetic number, because the mean of its divisors is an integer number (3003306027336).

Almost surely, 2^{11012122100221} is an apocalyptic number.

11012122100221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012122100221 is a deficient number, since it is larger than the sum of its proper divisors (1001102009123).

11012122100221 is a wasteful number, since it uses less digits than its factorization.

11012122100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001102009122.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11012122100221 its reverse (12200122121011), we get a palindrome (23212244221232).

The spelling of 11012122100221 in words is "eleven trillion, twelve billion, one hundred twenty-two million, one hundred thousand, two hundred twenty-one".