11211122002021 has 4 divisors (see below), whose sum is σ = 11219860212192. Its totient is φ = 11202383791852.

The previous prime is 11211122001967. The next prime is 11211122002033. The reversal of 11211122002021 is 12020022111211.

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 11211122002021 - 2³³ = 11202532067429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211122001986 and 11211122002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211122002121) 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, 4369103161 + ... + 4369105726.

It is an arithmetic number, because the mean of its divisors is an integer number (2804965053048).

Almost surely, 2^{11211122002021} is an apocalyptic number.

It is an amenable number.

11211122002021 is a deficient number, since it is larger than the sum of its proper divisors (8738210171).

11211122002021 is an equidigital number, since it uses as much as digits as its factorization.

11211122002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8738210170.

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

Adding to 11211122002021 its reverse (12020022111211), we get a palindrome (23231144113232).

The spelling of 11211122002021 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-two million, two thousand, twenty-one".