12002111010 has 80 divisors (see below), whose sum is σ = 34170755256. Its totient is φ = 3012291072.

The previous prime is 12002111003. The next prime is 12002111021. The reversal of 12002111010 is 1011120021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8857256769 + 3144854241 = 94113^2 + 56079^2 .

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 = 12002110983 and 12002111001.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 422037 + ... + 449576.

Almost surely, 2^12002111010 is an apocalyptic number.

12002111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12002111010 is an abundant number, since it is smaller than the sum of its proper divisors (22168644246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12002111010 is a wasteful number, since it uses less digits than its factorization.

12002111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871649 (or 871640 counting only the distinct ones).

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

Adding to 12002111010 its reverse (1011120021), we get a palindrome (13013231031).

The spelling of 12002111010 in words is "twelve billion, two million, one hundred eleven thousand, ten".