10011211102021 has 4 divisors (see below), whose sum is σ = 10011221804844. Its totient is φ = 10011200399200.

The previous prime is 10011211101889. The next prime is 10011211102027. The reversal of 10011211102021 is 12020111211001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 550905372900 + 9460305729121 = 742230^2 + 3075761^2 .

It is a cyclic number.

It is not a de Polignac number, because 10011211102021 - 2³⁹ = 9461455288133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011211101992 and 10011211102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011211102027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3798040 + ... + 5869201.

It is an arithmetic number, because the mean of its divisors is an integer number (2502805451211).

Almost surely, 2^{10011211102021} is an apocalyptic number.

It is an amenable number.

10011211102021 is a deficient number, since it is larger than the sum of its proper divisors (10702823).

10011211102021 is an equidigital number, since it uses as much as digits as its factorization.

10011211102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10702822.

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

Adding to 10011211102021 its reverse (12020111211001), we get a palindrome (22031322313022).

The spelling of 10011211102021 in words is "ten trillion, eleven billion, two hundred eleven million, one hundred two thousand, twenty-one".