11212101120021 has 32 divisors (see below), whose sum is σ = 15481977578496. Its totient is φ = 7210062720000.

The previous prime is 11212101119953. The next prime is 11212101120047. The reversal of 11212101120021 is 12002110121211.

It is a happy number.

It is not a de Polignac number, because 11212101120021 - 2¹⁹ = 11212100595733 is a prime.

It is a super-2 number, since 2×11212101120021² (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 (11212101120071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112182171 + ... + 112282071.

It is an arithmetic number, because the mean of its divisors is an integer number (483811799328).

Almost surely, 2^{11212101120021} is an apocalyptic number.

It is an amenable number.

11212101120021 is a deficient number, since it is larger than the sum of its proper divisors (4269876458475).

11212101120021 is a wasteful number, since it uses less digits than its factorization.

11212101120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103853.

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

Adding to 11212101120021 its reverse (12002110121211), we get a palindrome (23214211241232).

The spelling of 11212101120021 in words is "eleven trillion, two hundred twelve billion, one hundred one million, one hundred twenty thousand, twenty-one".