2012100221011 has 4 divisors (see below), whose sum is σ = 2012103069832. Its totient is φ = 2012097372192.

The previous prime is 2012100220997. The next prime is 2012100221017. The reversal of 2012100221011 is 1101220012102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2012100221011 - 2¹⁹ = 2012099696723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012100220982 and 2012100221000.

It is not an unprimeable number, because it can be changed into a prime (2012100221017) 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, 517531 + ... + 2071723.

It is an arithmetic number, because the mean of its divisors is an integer number (503025767458).

Almost surely, 2^{2012100221011} is an apocalyptic number.

2012100221011 is a deficient number, since it is larger than the sum of its proper divisors (2848821).

2012100221011 is a wasteful number, since it uses less digits than its factorization.

2012100221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848820.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012100221011 its reverse (1101220012102), we get a palindrome (3113320233113).

The spelling of 2012100221011 in words is "two trillion, twelve billion, one hundred million, two hundred twenty-one thousand, eleven".