20220021220187 has 2 divisors, whose sum is σ = 20220021220188. Its totient is φ = 20220021220186.

The previous prime is 20220021220169. The next prime is 20220021220253. The reversal of 20220021220187 is 78102212002202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20220021220187 - 2⁶ = 20220021220123 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220021220787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110010610093 + 10110010610094.

It is an arithmetic number, because the mean of its divisors is an integer number (10110010610094).

Almost surely, 2^{20220021220187} is an apocalyptic number.

20220021220187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220021220187 is an equidigital number, since it uses as much as digits as its factorization.

20220021220187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 20220021220187 its reverse (78102212002202), we get a palindrome (98322233222389).

The spelling of 20220021220187 in words is "twenty trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, one hundred eighty-seven".