11000221221021 has 4 divisors (see below), whose sum is σ = 14666961628032. Its totient is φ = 7333480814012.

The previous prime is 11000221220927. The next prime is 11000221221053. The reversal of 11000221221021 is 12012212200011.

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 11000221221021 - 2¹⁸ = 11000220958877 is a prime.

It is a super-2 number, since 2×11000221221021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000221221091) 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, 1833370203501 + ... + 1833370203506.

It is an arithmetic number, because the mean of its divisors is an integer number (3666740407008).

Almost surely, 2^{11000221221021} is an apocalyptic number.

It is an amenable number.

11000221221021 is a deficient number, since it is larger than the sum of its proper divisors (3666740407011).

11000221221021 is an equidigital number, since it uses as much as digits as its factorization.

11000221221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666740407010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11000221221021 its reverse (12012212200011), we get a palindrome (23012433421032).

The spelling of 11000221221021 in words is "eleven trillion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-one".