11200211122021 has 4 divisors (see below), whose sum is σ = 11200272518700. Its totient is φ = 11200149725344.

The previous prime is 11200211122013. The next prime is 11200211122049. The reversal of 11200211122021 is 12022111200211.

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 6960890722500 + 4239320399521 = 2638350^2 + 2058961^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200211122021 - 2³ = 11200211122013 is a prime.

It is a super-2 number, since 2×11200211122021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200211121986 and 11200211122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200211125021) 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, 30423886 + ... + 30789823.

It is an arithmetic number, because the mean of its divisors is an integer number (2800068129675).

Almost surely, 2^{11200211122021} is an apocalyptic number.

It is an amenable number.

11200211122021 is a deficient number, since it is larger than the sum of its proper divisors (61396679).

11200211122021 is an equidigital number, since it uses as much as digits as its factorization.

11200211122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61396678.

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

Adding to 11200211122021 its reverse (12022111200211), we get a palindrome (23222322322232).

The spelling of 11200211122021 in words is "eleven trillion, two hundred billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".