20121002110211 has 4 divisors (see below), whose sum is σ = 20121664734912. Its totient is φ = 20120339485512.

The previous prime is 20121002110129. The next prime is 20121002110247. The reversal of 20121002110211 is 11201120012102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20121002110211 - 2¹⁸ = 20121001848067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121002115211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331266800 + ... + 331327533.

It is an arithmetic number, because the mean of its divisors is an integer number (5030416183728).

Almost surely, 2^{20121002110211} is an apocalyptic number.

20121002110211 is a deficient number, since it is larger than the sum of its proper divisors (662624701).

20121002110211 is an equidigital number, since it uses as much as digits as its factorization.

20121002110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662624700.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121002110211 its reverse (11201120012102), we get a palindrome (31322122122313).

The spelling of 20121002110211 in words is "twenty trillion, one hundred twenty-one billion, two million, one hundred ten thousand, two hundred eleven".