2211212112101 has 4 divisors (see below), whose sum is σ = 2282541535104. Its totient is φ = 2139882689100.

The previous prime is 2211212112073. The next prime is 2211212112103. The reversal of 2211212112101 is 1012112121122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2211212112101 - 2²⁶ = 2211145003237 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 2211212112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211212112103) 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 3 ways as a sum of consecutive naturals, for example, 35664711455 + ... + 35664711516.

It is an arithmetic number, because the mean of its divisors is an integer number (570635383776).

Almost surely, 2^{2211212112101} is an apocalyptic number.

It is an amenable number.

2211212112101 is a deficient number, since it is larger than the sum of its proper divisors (71329423003).

2211212112101 is an equidigital number, since it uses as much as digits as its factorization.

2211212112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71329423002.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2211212112101 its reverse (1012112121122), we get a palindrome (3223324233223).

The spelling of 2211212112101 in words is "two trillion, two hundred eleven billion, two hundred twelve million, one hundred twelve thousand, one hundred one".