1212212212187 has 2 divisors, whose sum is σ = 1212212212188. Its totient is φ = 1212212212186.

The previous prime is 1212212212063. The next prime is 1212212212207. The reversal of 1212212212187 is 7812122122121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212212212187 - 2³⁰ = 1211138470363 is a prime.

It is a super-2 number, since 2×1212212212187² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212212212487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106106093 + 606106106094.

It is an arithmetic number, because the mean of its divisors is an integer number (606106106094).

Almost surely, 2^{1212212212187} is an apocalyptic number.

1212212212187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212212212187 is an equidigital number, since it uses as much as digits as its factorization.

1212212212187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 32.

The spelling of 1212212212187 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two hundred twelve thousand, one hundred eighty-seven".