212021103113 has 16 divisors (see below), whose sum is σ = 240395980800. Its totient is φ = 185931242640.

The previous prime is 212021103031. The next prime is 212021103127. The reversal of 212021103113 is 311301120212.

It is a cyclic number.

It is not a de Polignac number, because 212021103113 - 2⁸ = 212021102857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021103091 and 212021103100.

It is not an unprimeable number, because it can be changed into a prime (212021103313) 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, 7811843 + ... + 7838936.

It is an arithmetic number, because the mean of its divisors is an integer number (15024748800).

Almost surely, 2^212021103113 is an apocalyptic number.

212021103113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212021103113 is a deficient number, since it is larger than the sum of its proper divisors (28374877687).

212021103113 is a wasteful number, since it uses less digits than its factorization.

212021103113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15650852.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212021103113 its reverse (311301120212), we get a palindrome (523322223325).

The spelling of 212021103113 in words is "two hundred twelve billion, twenty-one million, one hundred three thousand, one hundred thirteen".