12012020102 has 16 divisors (see below), whose sum is σ = 18341186400.
Its totient is φ = 5899185600.
The previous prime is 12012020063. The next prime is 12012020107. The reversal of 12012020102 is 20102021021.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12012020107) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196577 + ... + 250332.
It is an arithmetic number, because the mean of its divisors is an integer number (1146324150).
Almost surely, 212012020102 is an apocalyptic number.
12012020102 is a deficient number, since it is larger than the sum of its proper divisors (6329166298).
12012020102 is a wasteful number, since it uses less digits than its factorization.
12012020102 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 447151.
The product of its (nonzero) digits is 16, while the sum is 11.
Adding to 12012020102 its reverse (20102021021), we get a palindrome (32114041123).
The spelling of 12012020102 in words is "twelve billion, twelve million, twenty thousand, one hundred two".