11020021100001 has 12 divisors (see below), whose sum is σ = 15986125032228. Its totient is φ = 7315149913344.

The previous prime is 11020021099991. The next prime is 11020021100041. The reversal of 11020021100001 is 10000112002011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7102091750625 + 3917929349376 = 2664975^2 + 1979376^2 .

It is not a de Polignac number, because 11020021100001 - 2¹⁵ = 11020021067233 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11020021100041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2627566120 + ... + 2627570313.

It is an arithmetic number, because the mean of its divisors is an integer number (1332177086019).

Almost surely, 2^{11020021100001} is an apocalyptic number.

It is an amenable number.

11020021100001 is a deficient number, since it is larger than the sum of its proper divisors (4966103932227).

11020021100001 is a wasteful number, since it uses less digits than its factorization.

11020021100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255136672 (or 5255136669 counting only the distinct ones).

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

Adding to 11020021100001 its reverse (10000112002011), we get a palindrome (21020133102012).

The spelling of 11020021100001 in words is "eleven trillion, twenty billion, twenty-one million, one hundred thousand, one".