2101202120212 has 24 divisors (see below), whose sum is σ = 3967737769800. Its totient is φ = 967880305536.

The previous prime is 2101202120209. The next prime is 2101202120279. The reversal of 2101202120212 is 2120212021012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 292806525456 + 1808395594756 = 541116^2 + 1344766^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39666787 + ... + 39719722.

It is an arithmetic number, because the mean of its divisors is an integer number (165322407075).

Almost surely, 2^{2101202120212} is an apocalyptic number.

It is an amenable number.

2101202120212 is a deficient number, since it is larger than the sum of its proper divisors (1866535649588).

2101202120212 is a wasteful number, since it uses less digits than its factorization.

2101202120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79387035 (or 79387033 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2101202120212 its reverse (2120212021012), we get a palindrome (4221414141224).

It can be divided in two parts, 210120 and 2120212, that added together give a palindrome (2330332).

The spelling of 2101202120212 in words is "two trillion, one hundred one billion, two hundred two million, one hundred twenty thousand, two hundred twelve".