11010212121021 has 32 divisors (see below), whose sum is σ = 15452728895232. Its totient is φ = 6959767879680.

The previous prime is 11010212121011. The next prime is 11010212121023. The reversal of 11010212121021 is 12012121201011.

It is a happy number.

It is not a de Polignac number, because 11010212121021 - 2⁷ = 11010212120893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010212121023) 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, 2270941 + ... + 5213213.

It is an arithmetic number, because the mean of its divisors is an integer number (482897777976).

Almost surely, 2^{11010212121021} is an apocalyptic number.

It is an amenable number.

11010212121021 is a deficient number, since it is larger than the sum of its proper divisors (4442516774211).

11010212121021 is a wasteful number, since it uses less digits than its factorization.

11010212121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942773.

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

Adding to 11010212121021 its reverse (12012121201011), we get a palindrome (23022333322032).

The spelling of 11010212121021 in words is "eleven trillion, ten billion, two hundred twelve million, one hundred twenty-one thousand, twenty-one".