2211003421421 has 2 divisors, whose sum is σ = 2211003421422. Its totient is φ = 2211003421420.

The previous prime is 2211003421409. The next prime is 2211003421433. The reversal of 2211003421421 is 1241243001122.

It is a balanced prime because it is at equal distance from previous prime (2211003421409) and next prime (2211003421433).

It can be written as a sum of positive squares in only one way, i.e., 1718078670025 + 492924751396 = 1310755^2 + 702086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211003421421 is a prime.

It is a super-2 number, since 2×2211003421421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211003421441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105501710710 + 1105501710711.

It is an arithmetic number, because the mean of its divisors is an integer number (1105501710711).

Almost surely, 2^{2211003421421} is an apocalyptic number.

It is an amenable number.

2211003421421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211003421421 is an equidigital number, since it uses as much as digits as its factorization.

2211003421421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2211003421421 its reverse (1241243001122), we get a palindrome (3452246422543).

The spelling of 2211003421421 in words is "two trillion, two hundred eleven billion, three million, four hundred twenty-one thousand, four hundred twenty-one".