2211222000121 has 4 divisors (see below), whose sum is σ = 2212044936192. Its totient is φ = 2210399064052.

The previous prime is 2211221999927. The next prime is 2211222000151. The reversal of 2211222000121 is 1210002221122.

It is a happy number.

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 2211222000121 - 2²⁹ = 2210685129209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211222000095 and 2211222000104.

It is not an unprimeable number, because it can be changed into a prime (2211222000151) 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, 411464005 + ... + 411469378.

It is an arithmetic number, because the mean of its divisors is an integer number (553011234048).

Almost surely, 2^{2211222000121} is an apocalyptic number.

It is an amenable number.

2211222000121 is a deficient number, since it is larger than the sum of its proper divisors (822936071).

2211222000121 is an equidigital number, since it uses as much as digits as its factorization.

2211222000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822936070.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211222000121 its reverse (1210002221122), we get a palindrome (3421224221243).

The spelling of 2211222000121 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.