10220320987 has 2 divisors, whose sum is σ = 10220320988. Its totient is φ = 10220320986.

The previous prime is 10220320867. The next prime is 10220321051. The reversal of 10220320987 is 78902302201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10220320987 - 2¹⁵ = 10220288219 is a prime.

It is a super-2 number, since 2×10220320987² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10220320087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110160493 + 5110160494.

It is an arithmetic number, because the mean of its divisors is an integer number (5110160494).

Almost surely, 2^10220320987 is an apocalyptic number.

10220320987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220320987 is an equidigital number, since it uses as much as digits as its factorization.

10220320987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 10220320987 in words is "ten billion, two hundred twenty million, three hundred twenty thousand, nine hundred eighty-seven".