20202101199187 has 2 divisors, whose sum is σ = 20202101199188. Its totient is φ = 20202101199186.

The previous prime is 20202101199053. The next prime is 20202101199193. The reversal of 20202101199187 is 78199110120202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20202101199187 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202101199197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101050599593 + 10101050599594.

It is an arithmetic number, because the mean of its divisors is an integer number (10101050599594).

Almost surely, 2^{20202101199187} is an apocalyptic number.

20202101199187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202101199187 is an equidigital number, since it uses as much as digits as its factorization.

20202101199187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 20202101199187 in words is "twenty trillion, two hundred two billion, one hundred one million, one hundred ninety-nine thousand, one hundred eighty-seven".