221023010987 has 2 divisors, whose sum is σ = 221023010988. Its totient is φ = 221023010986.

The previous prime is 221023010977. The next prime is 221023011029. The reversal of 221023010987 is 789010320122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221023010987 - 2¹⁴ = 221022994603 is a prime.

It is not a weakly prime, because it can be changed into another prime (221023010947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511505493 + 110511505494.

It is an arithmetic number, because the mean of its divisors is an integer number (110511505494).

Almost surely, 2^221023010987 is an apocalyptic number.

221023010987 is a deficient number, since it is larger than the sum of its proper divisors (1).

221023010987 is an equidigital number, since it uses as much as digits as its factorization.

221023010987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 221023010987 in words is "two hundred twenty-one billion, twenty-three million, ten thousand, nine hundred eighty-seven".