20010022187 has 2 divisors, whose sum is σ = 20010022188. Its totient is φ = 20010022186.

The previous prime is 20010022183. The next prime is 20010022213. The reversal of 20010022187 is 78122001002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010022187 - 2² = 20010022183 is a prime.

It is not a weakly prime, because it can be changed into another prime (20010022183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005011093 + 10005011094.

It is an arithmetic number, because the mean of its divisors is an integer number (10005011094).

Almost surely, 2^20010022187 is an apocalyptic number.

20010022187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010022187 is an equidigital number, since it uses as much as digits as its factorization.

20010022187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20010022187 its reverse (78122001002), we get a palindrome (98132023189).

The spelling of 20010022187 in words is "twenty billion, ten million, twenty-two thousand, one hundred eighty-seven".