100012212187 has 2 divisors, whose sum is σ = 100012212188. Its totient is φ = 100012212186.

The previous prime is 100012212161. The next prime is 100012212193. The reversal of 100012212187 is 781212210001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100012212187 - 2¹¹ = 100012210139 is a prime.

It is a super-2 number, since 2×100012212187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100012212137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50006106093 + 50006106094.

It is an arithmetic number, because the mean of its divisors is an integer number (50006106094).

Almost surely, 2^100012212187 is an apocalyptic number.

100012212187 is a deficient number, since it is larger than the sum of its proper divisors (1).

100012212187 is an equidigital number, since it uses as much as digits as its factorization.

100012212187 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 25.

Adding to 100012212187 its reverse (781212210001), we get a palindrome (881224422188).

The spelling of 100012212187 in words is "one hundred billion, twelve million, two hundred twelve thousand, one hundred eighty-seven".