2012121111210 has 32 divisors (see below), whose sum is σ = 5518960762752. Its totient is φ = 459913396800.

The previous prime is 2012121111191. The next prime is 2012121111233. The reversal of 2012121111210 is 121111212102.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2012121111210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4790764341 + ... + 4790764760.

It is an arithmetic number, because the mean of its divisors is an integer number (172467523836).

Almost surely, 2^{2012121111210} is an apocalyptic number.

2012121111210 is an abundant number, since it is smaller than the sum of its proper divisors (3506839651542).

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

2012121111210 is a wasteful number, since it uses less digits than its factorization.

2012121111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581529118.

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

Adding to 2012121111210 its reverse (121111212102), we get a palindrome (2133232323312).

The spelling of 2012121111210 in words is "two trillion, twelve billion, one hundred twenty-one million, one hundred eleven thousand, two hundred ten".