11101022021021 has 4 divisors (see below), whose sum is σ = 11163038904000. Its totient is φ = 11039005138044.

The previous prime is 11101022020901. The next prime is 11101022021039. The reversal of 11101022021021 is 12012022010111.

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 a de Polignac number, because none of the positive numbers 2^k-11101022021021 is a prime.

It is a super-2 number, since 2×11101022021021² (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 = 11101022020987 and 11101022021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101022221021) 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, 31008441221 + ... + 31008441578.

It is an arithmetic number, because the mean of its divisors is an integer number (2790759726000).

Almost surely, 2^{11101022021021} is an apocalyptic number.

It is an amenable number.

11101022021021 is a deficient number, since it is larger than the sum of its proper divisors (62016882979).

11101022021021 is an equidigital number, since it uses as much as digits as its factorization.

11101022021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62016882978.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11101022021021 its reverse (12012022010111), we get a palindrome (23113044031132).

The spelling of 11101022021021 in words is "eleven trillion, one hundred one billion, twenty-two million, twenty-one thousand, twenty-one".