11211200211021 has 16 divisors (see below), whose sum is σ = 14967408683136. Its totient is φ = 7464567384576.

The previous prime is 11211200210989. The next prime is 11211200211023. The reversal of 11211200211021 is 12011200211211.

It is a happy number.

It is not a de Polignac number, because 11211200211021 - 2⁵ = 11211200210989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211200211023) 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, 8821861 + ... + 10012373.

It is an arithmetic number, because the mean of its divisors is an integer number (935463042696).

Almost surely, 2^{11211200211021} is an apocalyptic number.

It is an amenable number.

11211200211021 is a deficient number, since it is larger than the sum of its proper divisors (3756208472115).

11211200211021 is a wasteful number, since it uses less digits than its factorization.

11211200211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194532.

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

Adding to 11211200211021 its reverse (12011200211211), we get a palindrome (23222400422232).

The spelling of 11211200211021 in words is "eleven trillion, two hundred eleven billion, two hundred million, two hundred eleven thousand, twenty-one".