12111021120210 has 32 divisors (see below), whose sum is σ = 29684885812992. Its totient is φ = 3160890618240.

The previous prime is 12111021120169. The next prime is 12111021120251. The reversal of 12111021120210 is 1202112011121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12111021120169) and next prime (12111021120251).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111021120210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4294686931 + ... + 4294689750.

It is an arithmetic number, because the mean of its divisors is an integer number (927652681656).

Almost surely, 2^{12111021120210} is an apocalyptic number.

12111021120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111021120210 is an abundant number, since it is smaller than the sum of its proper divisors (17573864692782).

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

12111021120210 is a wasteful number, since it uses less digits than its factorization.

12111021120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589376738.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111021120210 its reverse (1202112011121), we get a palindrome (13313133131331).

The spelling of 12111021120210 in words is "twelve trillion, one hundred eleven billion, twenty-one million, one hundred twenty thousand, two hundred ten".