11101101221021 has 16 divisors (see below), whose sum is σ = 13245810935808. Its totient is φ = 9096552946800.

The previous prime is 11101101220927. The next prime is 11101101221027. The reversal of 11101101221021 is 12012210110111.

It is a cyclic number.

It is not a de Polignac number, because 11101101221021 - 2¹⁴ = 11101101204637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101101220987 and 11101101221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101101221027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18533975 + ... + 19123556.

It is an arithmetic number, because the mean of its divisors is an integer number (827863183488).

Almost surely, 2^{11101101221021} is an apocalyptic number.

It is an amenable number.

11101101221021 is a deficient number, since it is larger than the sum of its proper divisors (2144709714787).

11101101221021 is a wasteful number, since it uses less digits than its factorization.

11101101221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37659392.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11101101221021 its reverse (12012210110111), we get a palindrome (23113311331132).

The spelling of 11101101221021 in words is "eleven trillion, one hundred one billion, one hundred one million, two hundred twenty-one thousand, twenty-one".