11022001001001 has 6 divisors (see below), whose sum is σ = 15920668112570. Its totient is φ = 7348000667328.

The previous prime is 11022001000981. The next prime is 11022001001029. The reversal of 11022001001001 is 10010010022011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7141593485376 + 3880407515625 = 2672376^2 + 1969875^2 .

It is not a de Polignac number, because 11022001001001 - 2⁹ = 11022001000489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1224666777889 = 11022001001001 / (1 + 1 + 0 + 2 + 2 + 0 + 0 + 1 + 0 + 0 + 1 + 0 + 0 + 1).

It is a Duffinian number.

11022001001001 is a modest number, since divided by 1001001 gives 11022 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11022001001201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 612333388936 + ... + 612333388953.

Almost surely, 2^{11022001001001} is an apocalyptic number.

It is an amenable number.

11022001001001 is a deficient number, since it is larger than the sum of its proper divisors (4898667111569).

11022001001001 is a wasteful number, since it uses less digits than its factorization.

11022001001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224666777895 (or 1224666777892 counting only the distinct ones).

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

Adding to 11022001001001 its reverse (10010010022011), we get a palindrome (21032011023012).

The spelling of 11022001001001 in words is "eleven trillion, twenty-two billion, one million, one thousand, one".