11212101001021 has 16 divisors (see below), whose sum is σ = 11651439038400. Its totient is φ = 10776290482048.

The previous prime is 11212101000977. The next prime is 11212101001039. The reversal of 11212101001021 is 12010010121211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11212101001021 - 2¹⁵ = 11212100968253 is a prime.

It is a super-2 number, since 2×11212101001021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212101000992 and 11212101001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212101001081) 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, 48816870 + ... + 49046008.

It is an arithmetic number, because the mean of its divisors is an integer number (728214939900).

Almost surely, 2^{11212101001021} is an apocalyptic number.

It is an amenable number.

11212101001021 is a deficient number, since it is larger than the sum of its proper divisors (439338037379).

11212101001021 is a wasteful number, since it uses less digits than its factorization.

11212101001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236828.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11212101001021 its reverse (12010010121211), we get a palindrome (23222111122232).

The spelling of 11212101001021 in words is "eleven trillion, two hundred twelve billion, one hundred one million, one thousand, twenty-one".