2121212110011 has 8 divisors (see below), whose sum is σ = 2832141319440. Its totient is φ = 1412212153632.

The previous prime is 2121212110009. The next prime is 2121212110019. The reversal of 2121212110011 is 1100112121212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121212110011 - 2¹ = 2121212110009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121212110019) 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, 482310696 + ... + 482315093.

It is an arithmetic number, because the mean of its divisors is an integer number (354017664930).

Almost surely, 2^{2121212110011} is an apocalyptic number.

2121212110011 is a deficient number, since it is larger than the sum of its proper divisors (710929209429).

2121212110011 is an equidigital number, since it uses as much as digits as its factorization.

2121212110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964626525.

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

Adding to 2121212110011 its reverse (1100112121212), we get a palindrome (3221324231223).

It can be divided in two parts, 2121212 and 110011, that multiplied together give a palindrome (233356653332).

The spelling of 2121212110011 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, eleven".