11102021001 has 16 divisors (see below), whose sum is σ = 16632244800. Its totient is φ = 7318184544.

The previous prime is 11102020999. The next prime is 11102021023. The reversal of 11102021001 is 10012020111.

It is a happy number.

It is not a de Polignac number, because 11102021001 - 2¹ = 11102020999 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 (11102020001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2307631 + ... + 2312436.

It is an arithmetic number, because the mean of its divisors is an integer number (1039515300).

Almost surely, 2^11102021001 is an apocalyptic number.

It is an amenable number.

11102021001 is a deficient number, since it is larger than the sum of its proper divisors (5530223799).

11102021001 is an equidigital number, since it uses as much as digits as its factorization.

11102021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620165 (or 4620159 counting only the distinct ones).

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

Adding to 11102021001 its reverse (10012020111), we get a palindrome (21114041112).

The spelling of 11102021001 in words is "eleven billion, one hundred two million, twenty-one thousand, one".