11021001001 has 8 divisors (see below), whose sum is σ = 11258282880. Its totient is φ = 10783835568.

The previous prime is 11021000983. The next prime is 11021001037. The reversal of 11021001001 is 10010012011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11021001001 - 2¹⁹ = 11020476713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021001071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177870 + ... + 231688.

It is an arithmetic number, because the mean of its divisors is an integer number (1407285360).

Almost surely, 2^11021001001 is an apocalyptic number.

It is an amenable number.

11021001001 is a deficient number, since it is larger than the sum of its proper divisors (237281879).

11021001001 is an equidigital number, since it uses as much as digits as its factorization.

11021001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58223.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 11021001001 its reverse (10010012011), we get a palindrome (21031013012).

The spelling of 11021001001 in words is "eleven billion, twenty-one million, one thousand, one".