11000021012001 has 24 divisors (see below), whose sum is σ = 18177466042944. Its totient is φ = 6279252801120.

The previous prime is 11000021011997. The next prime is 11000021012009. The reversal of 11000021012001 is 10021012000011.

It is a happy number.

It is not a de Polignac number, because 11000021012001 - 2² = 11000021011997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11000021012009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89847946 + ... + 89970291.

It is an arithmetic number, because the mean of its divisors is an integer number (757394418456).

Almost surely, 2^{11000021012001} is an apocalyptic number.

It is an amenable number.

11000021012001 is a deficient number, since it is larger than the sum of its proper divisors (7177445030943).

11000021012001 is a wasteful number, since it uses less digits than its factorization.

11000021012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179819221 (or 179819218 counting only the distinct ones).

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

Adding to 11000021012001 its reverse (10021012000011), we get a palindrome (21021033012012).

The spelling of 11000021012001 in words is "eleven trillion, twenty-one million, twelve thousand, one".