11110001021001 has 24 divisors (see below), whose sum is σ = 16198439141664. Its totient is φ = 7337137832640.

The previous prime is 11110001020999. The next prime is 11110001021011. The reversal of 11110001021001 is 10012010001111.

It is not a de Polignac number, because 11110001021001 - 2¹ = 11110001020999 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 (11110001021011) 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, 23938566 + ... + 24398256.

It is an arithmetic number, because the mean of its divisors is an integer number (674934964236).

Almost surely, 2^{11110001021001} is an apocalyptic number.

It is an amenable number.

11110001021001 is a deficient number, since it is larger than the sum of its proper divisors (5088438120663).

11110001021001 is a wasteful number, since it uses less digits than its factorization.

11110001021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484901 (or 484898 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11110001021001 its reverse (10012010001111), we get a palindrome (21122011022112).

The spelling of 11110001021001 in words is "eleven trillion, one hundred ten billion, one million, twenty-one thousand, one".