212210121113 has 4 divisors (see below), whose sum is σ = 212221069620. Its totient is φ = 212199172608.

The previous prime is 212210121089. The next prime is 212210121119. The reversal of 212210121113 is 311121012212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4955737609 + 207254383504 = 70397^2 + 455252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212210121113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212210121091 and 212210121100.

It is not an unprimeable number, because it can be changed into a prime (212210121119) 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, 5445128 + ... + 5483961.

It is an arithmetic number, because the mean of its divisors is an integer number (53055267405).

Almost surely, 2^212210121113 is an apocalyptic number.

It is an amenable number.

212210121113 is a deficient number, since it is larger than the sum of its proper divisors (10948507).

212210121113 is a wasteful number, since it uses less digits than its factorization.

212210121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10948506.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212210121113 its reverse (311121012212), we get a palindrome (523331133325).

The spelling of 212210121113 in words is "two hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, one hundred thirteen".