11021200001001 has 24 divisors (see below), whose sum is σ = 16193588193120. Its totient is φ = 7221464654976.

The previous prime is 11021200000931. The next prime is 11021200001011. The reversal of 11021200001001 is 10010000212011.

It is a happy number.

It is not a de Polignac number, because 11021200001001 - 2¹⁹ = 11021199476713 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 (11021200001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20361856 + ... + 20896113.

It is an arithmetic number, because the mean of its divisors is an integer number (674732841380).

Almost surely, 2^{11021200001001} is an apocalyptic number.

It is an amenable number.

11021200001001 is a deficient number, since it is larger than the sum of its proper divisors (5172388192119).

11021200001001 is a wasteful number, since it uses less digits than its factorization.

11021200001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41258485 (or 41258482 counting only the distinct ones).

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

Adding to 11021200001001 its reverse (10010000212011), we get a palindrome (21031200213012).

The spelling of 11021200001001 in words is "eleven trillion, twenty-one billion, two hundred million, one thousand, one".