2212111220201 has 4 divisors (see below), whose sum is σ = 2212118577792. Its totient is φ = 2212103862612.

The previous prime is 2212111220177. The next prime is 2212111220237. The reversal of 2212111220201 is 1020221112122.

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 a de Polignac number, because none of the positive numbers 2^k-2212111220201 is a prime.

It is a super-2 number, since 2×2212111220201² (a number of 25 digits) contains 22 as substring.

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 2212111220201.

It is not an unprimeable number, because it can be changed into a prime (2212111220281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3207701 + ... + 3835826.

It is an arithmetic number, because the mean of its divisors is an integer number (553029644448).

Almost surely, 2^{2212111220201} is an apocalyptic number.

It is an amenable number.

2212111220201 is a deficient number, since it is larger than the sum of its proper divisors (7357591).

2212111220201 is an equidigital number, since it uses as much as digits as its factorization.

2212111220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357590.

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

Adding to 2212111220201 its reverse (1020221112122), we get a palindrome (3232332332323).

The spelling of 2212111220201 in words is "two trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty thousand, two hundred one".