11020211220021 has 16 divisors (see below), whose sum is σ = 15297108499200. Its totient is φ = 7048287949248.

The previous prime is 11020211219993. The next prime is 11020211220037. The reversal of 11020211220021 is 12002211202011.

It is not a de Polignac number, because 11020211220021 - 2⁵ = 11020211219989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020211220041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403391101 + ... + 403418418.

It is an arithmetic number, because the mean of its divisors is an integer number (956069281200).

Almost surely, 2^{11020211220021} is an apocalyptic number.

It is an amenable number.

11020211220021 is a deficient number, since it is larger than the sum of its proper divisors (4276897279179).

11020211220021 is a wasteful number, since it uses less digits than its factorization.

11020211220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806809708.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11020211220021 its reverse (12002211202011), we get a palindrome (23022422422032).

The spelling of 11020211220021 in words is "eleven trillion, twenty billion, two hundred eleven million, two hundred twenty thousand, twenty-one".