2211020111121 has 8 divisors (see below), whose sum is σ = 3043124454144. Its totient is φ = 1426464587760.

The previous prime is 2211020111119. The next prime is 2211020111123. The reversal of 2211020111121 is 1211110201122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2211020111119) and next prime (2211020111123).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2211020111121 - 2¹ = 2211020111119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211020111121.

It is not an unprimeable number, because it can be changed into a prime (2211020111123) 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 7 ways as a sum of consecutive naturals, for example, 11887204806 + ... + 11887204991.

It is an arithmetic number, because the mean of its divisors is an integer number (380390556768).

Almost surely, 2^{2211020111121} is an apocalyptic number.

It is an amenable number.

2211020111121 is a deficient number, since it is larger than the sum of its proper divisors (832104343023).

2211020111121 is a wasteful number, since it uses less digits than its factorization.

2211020111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23774409831.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2211020111121 its reverse (1211110201122), we get a palindrome (3422130312243).

Subtracting from 2211020111121 its reverse (1211110201122), we obtain a palindrome (999909909999).

The spelling of 2211020111121 in words is "two trillion, two hundred eleven billion, twenty million, one hundred eleven thousand, one hundred twenty-one".