2114210221421 has 2 divisors, whose sum is σ = 2114210221422. Its totient is φ = 2114210221420.

The previous prime is 2114210221399. The next prime is 2114210221423. The reversal of 2114210221421 is 1241220124112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2114156712196 + 53509225 = 1454014^2 + 7315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2114210221421 is a prime.

It is a super-2 number, since 2×2114210221421² (a number of 25 digits) contains 22 as substring.

Together with 2114210221423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2114210221423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057105110710 + 1057105110711.

It is an arithmetic number, because the mean of its divisors is an integer number (1057105110711).

Almost surely, 2^{2114210221421} is an apocalyptic number.

It is an amenable number.

2114210221421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2114210221421 is an equidigital number, since it uses as much as digits as its factorization.

2114210221421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 2114210221421 its reverse (1241220124112), we get a palindrome (3355430345533).

The spelling of 2114210221421 in words is "two trillion, one hundred fourteen billion, two hundred ten million, two hundred twenty-one thousand, four hundred twenty-one".