212021102113 has 16 divisors (see below), whose sum is σ = 222139604736. Its totient is φ = 202151128960.

The previous prime is 212021102093. The next prime is 212021102131. The reversal of 212021102113 is 311201120212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021102113 is a prime.

It is a super-2 number, since 2×212021102113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021102173) 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, 1235595 + ... + 1396687.

It is an arithmetic number, because the mean of its divisors is an integer number (13883725296).

Almost surely, 2^212021102113 is an apocalyptic number.

It is an amenable number.

212021102113 is a deficient number, since it is larger than the sum of its proper divisors (10118502623).

212021102113 is a wasteful number, since it uses less digits than its factorization.

212021102113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161864.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212021102113 its reverse (311201120212), we get a palindrome (523222222325).

The spelling of 212021102113 in words is "two hundred twelve billion, twenty-one million, one hundred two thousand, one hundred thirteen".