12002101011 has 24 divisors (see below), whose sum is σ = 17783080224. Its totient is φ = 7795751040.

The previous prime is 12002101003. The next prime is 12002101057. The reversal of 12002101011 is 11010120021.

It is a happy number.

It is not a de Polignac number, because 12002101011 - 2³ = 12002101003 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 12002100984 and 12002101002.

It is not an unprimeable number, because it can be changed into a prime (12002108011) 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, 257850 + ... + 300816.

It is an arithmetic number, because the mean of its divisors is an integer number (740961676).

Almost surely, 2^12002101011 is an apocalyptic number.

12002101011 is a deficient number, since it is larger than the sum of its proper divisors (5780979213).

12002101011 is a wasteful number, since it uses less digits than its factorization.

12002101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43771 (or 43768 counting only the distinct ones).

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

Adding to 12002101011 its reverse (11010120021), we get a palindrome (23012221032).

The spelling of 12002101011 in words is "twelve billion, two million, one hundred one thousand, eleven".