20200321187 has 2 divisors, whose sum is σ = 20200321188. Its totient is φ = 20200321186.

The previous prime is 20200321157. The next prime is 20200321223. The reversal of 20200321187 is 78112300202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20200321187 - 2¹² = 20200317091 is a prime.

It is a super-2 number, since 2×20200321187² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20200321157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100160593 + 10100160594.

It is an arithmetic number, because the mean of its divisors is an integer number (10100160594).

Almost surely, 2^20200321187 is an apocalyptic number.

20200321187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200321187 is an equidigital number, since it uses as much as digits as its factorization.

20200321187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 20200321187 its reverse (78112300202), we get a palindrome (98312621389).

The spelling of 20200321187 in words is "twenty billion, two hundred million, three hundred twenty-one thousand, one hundred eighty-seven".