1000012020187 has 2 divisors, whose sum is σ = 1000012020188. Its totient is φ = 1000012020186.

The previous prime is 1000012020173. The next prime is 1000012020221. The reversal of 1000012020187 is 7810202100001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000012020187 - 2³⁹ = 450256206299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000012020487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500006010093 + 500006010094.

It is an arithmetic number, because the mean of its divisors is an integer number (500006010094).

Almost surely, 2^{1000012020187} is an apocalyptic number.

1000012020187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000012020187 is an equidigital number, since it uses as much as digits as its factorization.

1000012020187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1000012020187 its reverse (7810202100001), we get a palindrome (8810214120188).

The spelling of 1000012020187 in words is "one trillion, twelve million, twenty thousand, one hundred eighty-seven".