11021211021 has 8 divisors (see below), whose sum is σ = 14699540160. Its totient is φ = 7345177952.

The previous prime is 11021211017. The next prime is 11021211077. The reversal of 11021211021 is 12011212011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11021211021 - 2² = 11021211017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021210988 and 11021211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021211121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562785 + ... + 582038.

It is an arithmetic number, because the mean of its divisors is an integer number (1837442520).

Almost surely, 2^11021211021 is an apocalyptic number.

It is an amenable number.

11021211021 is a deficient number, since it is larger than the sum of its proper divisors (3678329139).

11021211021 is a wasteful number, since it uses less digits than its factorization.

11021211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148035.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11021211021 its reverse (12011212011), we get a palindrome (23032423032).

The spelling of 11021211021 in words is "eleven billion, twenty-one million, two hundred eleven thousand, twenty-one".