2211223313121 has 4 divisors (see below), whose sum is σ = 2948297750832. Its totient is φ = 1474148875412.

The previous prime is 2211223313107. The next prime is 2211223313129. The reversal of 2211223313121 is 1213133221122.

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 2211223313121 - 2¹⁹ = 2211222788833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211223313091 and 2211223313100.

It is not an unprimeable number, because it can be changed into a prime (2211223313129) 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, 368537218851 + ... + 368537218856.

It is an arithmetic number, because the mean of its divisors is an integer number (737074437708).

Almost surely, 2^{2211223313121} is an apocalyptic number.

It is an amenable number.

2211223313121 is a deficient number, since it is larger than the sum of its proper divisors (737074437711).

2211223313121 is an equidigital number, since it uses as much as digits as its factorization.

2211223313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737074437710.

The product of its digits is 864, while the sum is 24.

Adding to 2211223313121 its reverse (1213133221122), we get a palindrome (3424356534243).

The spelling of 2211223313121 in words is "two trillion, two hundred eleven billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred twenty-one".