11220021021011 has 4 divisors (see below), whose sum is σ = 12240022932024. Its totient is φ = 10200019110000.

The previous prime is 11220021020963. The next prime is 11220021021037. The reversal of 11220021021011 is 11012012002211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11220021021011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220021023011) 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, 510000955490 + ... + 510000955511.

It is an arithmetic number, because the mean of its divisors is an integer number (3060005733006).

Almost surely, 2^{11220021021011} is an apocalyptic number.

11220021021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11220021021011 is a deficient number, since it is larger than the sum of its proper divisors (1020001911013).

11220021021011 is a wasteful number, since it uses less digits than its factorization.

11220021021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020001911012.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11220021021011 its reverse (11012012002211), we get a palindrome (22232033023222).

The spelling of 11220021021011 in words is "eleven trillion, two hundred twenty billion, twenty-one million, twenty-one thousand, eleven".