20120210211011 has 4 divisors (see below), whose sum is σ = 20362622382312. Its totient is φ = 19877798039712.

The previous prime is 20120210210999. The next prime is 20120210211019. The reversal of 20120210211011 is 11011201202102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120210211011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120210211019) 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, 121206085526 + ... + 121206085691.

It is an arithmetic number, because the mean of its divisors is an integer number (5090655595578).

Almost surely, 2^{20120210211011} is an apocalyptic number.

20120210211011 is a deficient number, since it is larger than the sum of its proper divisors (242412171301).

20120210211011 is an equidigital number, since it uses as much as digits as its factorization.

20120210211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242412171300.

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

Adding to 20120210211011 its reverse (11011201202102), we get a palindrome (31131411413113).

It can be divided in two parts, 201202102 and 11011, that multiplied together give a palindrome (2215436345122).

The spelling of 20120210211011 in words is "twenty trillion, one hundred twenty billion, two hundred ten million, two hundred eleven thousand, eleven".