2211021123121 has 2 divisors, whose sum is σ = 2211021123122. Its totient is φ = 2211021123120.

The previous prime is 2211021123083. The next prime is 2211021123127. The reversal of 2211021123121 is 1213211201122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1621713106225 + 589308016896 = 1273465^2 + 767664^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211021123121 - 2¹¹ = 2211021121073 is a prime.

It is a super-2 number, since 2×2211021123121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2211021123127) 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 as a sum of consecutive naturals, namely, 1105510561560 + 1105510561561.

It is an arithmetic number, because the mean of its divisors is an integer number (1105510561561).

Almost surely, 2^{2211021123121} is an apocalyptic number.

It is an amenable number.

2211021123121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211021123121 is an equidigital number, since it uses as much as digits as its factorization.

2211021123121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2211021123121 its reverse (1213211201122), we get a palindrome (3424232324243).

The spelling of 2211021123121 in words is "two trillion, two hundred eleven billion, twenty-one million, one hundred twenty-three thousand, one hundred twenty-one".