2222121111101 has 4 divisors (see below), whose sum is σ = 2264047924572. Its totient is φ = 2180194297632.

The previous prime is 2222121110983. The next prime is 2222121111107. The reversal of 2222121111101 is 1011111212222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1288511035876 + 933610075225 = 1135126^2 + 966235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222121111101 - 2¹⁸ = 2222120848957 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 2222121111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222121111107) 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, 20963406656 + ... + 20963406761.

It is an arithmetic number, because the mean of its divisors is an integer number (566011981143).

Almost surely, 2^{2222121111101} is an apocalyptic number.

It is an amenable number.

2222121111101 is a deficient number, since it is larger than the sum of its proper divisors (41926813471).

2222121111101 is an equidigital number, since it uses as much as digits as its factorization.

2222121111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41926813470.

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

Adding to 2222121111101 its reverse (1011111212222), we get a palindrome (3233232323323).

The spelling of 2222121111101 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred one".