11100211221021 has 32 divisors (see below), whose sum is σ = 15975460451328. Its totient is φ = 6815175943680.

The previous prime is 11100211220993. The next prime is 11100211221067. The reversal of 11100211221021 is 12012211200111.

It is a happy number.

It is not a de Polignac number, because 11100211221021 - 2¹⁰ = 11100211219997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100211211021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183029715 + ... + 183090351.

It is an arithmetic number, because the mean of its divisors is an integer number (499233139104).

Almost surely, 2^{11100211221021} is an apocalyptic number.

It is an amenable number.

11100211221021 is a deficient number, since it is larger than the sum of its proper divisors (4875249230307).

11100211221021 is a wasteful number, since it uses less digits than its factorization.

11100211221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71381.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11100211221021 its reverse (12012211200111), we get a palindrome (23112422421132).

The spelling of 11100211221021 in words is "eleven trillion, one hundred billion, two hundred eleven million, two hundred twenty-one thousand, twenty-one".