101212222211 has 4 divisors (see below), whose sum is σ = 101777653800. Its totient is φ = 100646790624.

The previous prime is 101212222123. The next prime is 101212222213. The reversal of 101212222211 is 112222212101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212222211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212222211.

It is not an unprimeable number, because it can be changed into a prime (101212222213) 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, 282715526 + ... + 282715883.

It is an arithmetic number, because the mean of its divisors is an integer number (25444413450).

Almost surely, 2^101212222211 is an apocalyptic number.

101212222211 is a deficient number, since it is larger than the sum of its proper divisors (565431589).

101212222211 is an equidigital number, since it uses as much as digits as its factorization.

101212222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565431588.

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

Adding to 101212222211 its reverse (112222212101), we get a palindrome (213434434312).

The spelling of 101212222211 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred eleven".