212101101242 has 16 divisors (see below), whose sum is σ = 318426076800. Its totient is φ = 105959118720.

The previous prime is 212101101241. The next prime is 212101101269. The reversal of 212101101242 is 242101101212.

It is a self number, because there is not a number n which added to its sum of digits gives 212101101242.

It is not an unprimeable number, because it can be changed into a prime (212101101241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12973109 + ... + 12989447.

It is an arithmetic number, because the mean of its divisors is an integer number (19901629800).

Almost surely, 2^212101101242 is an apocalyptic number.

212101101242 is a deficient number, since it is larger than the sum of its proper divisors (106324975558).

212101101242 is a wasteful number, since it uses less digits than its factorization.

212101101242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21541.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212101101242 its reverse (242101101212), we get a palindrome (454202202454).

The spelling of 212101101242 in words is "two hundred twelve billion, one hundred one million, one hundred one thousand, two hundred forty-two".