11102120001 has 12 divisors (see below), whose sum is σ = 18327309312. Its totient is φ = 6344068536.

The previous prime is 11102119999. The next prime is 11102120021. The reversal of 11102120001 is 10002120111.

It is a happy number.

It is not a de Polignac number, because 11102120001 - 2¹ = 11102119999 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 (11102120021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88112001 + ... + 88112126.

It is an arithmetic number, because the mean of its divisors is an integer number (1527275776).

Almost surely, 2^11102120001 is an apocalyptic number.

It is an amenable number.

11102120001 is a deficient number, since it is larger than the sum of its proper divisors (7225189311).

11102120001 is a wasteful number, since it uses less digits than its factorization.

11102120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176224140 (or 176224137 counting only the distinct ones).

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

Adding to 11102120001 its reverse (10002120111), we get a palindrome (21104240112).

The spelling of 11102120001 in words is "eleven billion, one hundred two million, one hundred twenty thousand, one".