11010102021 has 12 divisors (see below), whose sum is σ = 15906485920. Its totient is φ = 7338681000.

The previous prime is 11010102017. The next prime is 11010102031. The reversal of 11010102021 is 12020101011.

It is a happy number.

It is not a de Polignac number, because 11010102021 - 2² = 11010102017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11010101994 and 11010102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010102031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64105 + ... + 161646.

Almost surely, 2^11010102021 is an apocalyptic number.

It is an amenable number.

11010102021 is a deficient number, since it is larger than the sum of its proper divisors (4896383899).

11010102021 is a wasteful number, since it uses less digits than its factorization.

11010102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231176 (or 231173 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11010102021 its reverse (12020101011), we get a palindrome (23030203032).

The spelling of 11010102021 in words is "eleven billion, ten million, one hundred two thousand, twenty-one".