7221174413021 has 2 divisors, whose sum is σ = 7221174413022. Its totient is φ = 7221174413020.

The previous prime is 7221174413003. The next prime is 7221174413023. The reversal of 7221174413021 is 1203144711227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6405378883225 + 815795529796 = 2530885^2 + 903214^2 .

It is a cyclic number.

It is not a de Polignac number, because 7221174413021 - 2¹⁴ = 7221174396637 is a prime.

Together with 7221174413023, 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 (7221174413023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610587206510 + 3610587206511.

It is an arithmetic number, because the mean of its divisors is an integer number (3610587206511).

Almost surely, 2^{7221174413021} is an apocalyptic number.

It is an amenable number.

7221174413021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221174413021 is an equidigital number, since it uses as much as digits as its factorization.

7221174413021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 7221174413021 in words is "seven trillion, two hundred twenty-one billion, one hundred seventy-four million, four hundred thirteen thousand, twenty-one".