11021211010221 has 32 divisors (see below), whose sum is σ = 15665212080000. Its totient is φ = 6868231311360.

The previous prime is 11021211010219. The next prime is 11021211010231. The reversal of 11021211010221 is 12201011212011.

It is a happy number.

It is not a de Polignac number, because 11021211010221 - 2¹ = 11021211010219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11021211010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021211010211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91500166 + ... + 91620536.

It is an arithmetic number, because the mean of its divisors is an integer number (489537877500).

Almost surely, 2^{11021211010221} is an apocalyptic number.

It is an amenable number.

11021211010221 is a deficient number, since it is larger than the sum of its proper divisors (4644001069779).

11021211010221 is a wasteful number, since it uses less digits than its factorization.

11021211010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132589.

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

Adding to 11021211010221 its reverse (12201011212011), we get a palindrome (23222222222232).

The spelling of 11021211010221 in words is "eleven trillion, twenty-one billion, two hundred eleven million, ten thousand, two hundred twenty-one".