11212012219987 has 2 divisors, whose sum is σ = 11212012219988. Its totient is φ = 11212012219986.

The previous prime is 11212012219951. The next prime is 11212012220069. The reversal of 11212012219987 is 78991221021211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212012219987 is a prime.

It is a super-2 number, since 2×11212012219987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11212012219687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606006109993 + 5606006109994.

It is an arithmetic number, because the mean of its divisors is an integer number (5606006109994).

Almost surely, 2^{11212012219987} is an apocalyptic number.

11212012219987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212012219987 is an equidigital number, since it uses as much as digits as its factorization.

11212012219987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 46.

The spelling of 11212012219987 in words is "eleven trillion, two hundred twelve billion, twelve million, two hundred nineteen thousand, nine hundred eighty-seven".