7301221087 has 2 divisors, whose sum is σ = 7301221088. Its totient is φ = 7301221086.

The previous prime is 7301221069. The next prime is 7301221097. The reversal of 7301221087 is 7801221037.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7301221087 - 2²⁷ = 7167003359 is a prime.

It is a super-2 number, since 2×7301221087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7301221097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3650610543 + 3650610544.

It is an arithmetic number, because the mean of its divisors is an integer number (3650610544).

Almost surely, 2^7301221087 is an apocalyptic number.

7301221087 is a deficient number, since it is larger than the sum of its proper divisors (1).

7301221087 is an equidigital number, since it uses as much as digits as its factorization.

7301221087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 7301221087 is about 85447.1830255392. The cubic root of 7301221087 is about 1939.9855710657.

The spelling of 7301221087 in words is "seven billion, three hundred one million, two hundred twenty-one thousand, eighty-seven".