2012210210021 has 16 divisors (see below), whose sum is σ = 2199270528000. Its totient is φ = 1825840968000.

The previous prime is 2012210209993. The next prime is 2012210210039. The reversal of 2012210210021 is 1200120122102.

It is a cyclic number.

It is not a de Polignac number, because 2012210210021 - 2¹⁰ = 2012210208997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012210209978 and 2012210210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012210210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17206655 + ... + 17323203.

It is an arithmetic number, because the mean of its divisors is an integer number (137454408000).

Almost surely, 2^{2012210210021} is an apocalyptic number.

It is an amenable number.

2012210210021 is a deficient number, since it is larger than the sum of its proper divisors (187060317979).

2012210210021 is a wasteful number, since it uses less digits than its factorization.

2012210210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119500.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2012210210021 its reverse (1200120122102), we get a palindrome (3212330332123).

The spelling of 2012210210021 in words is "two trillion, twelve billion, two hundred ten million, two hundred ten thousand, twenty-one".