212223233987 has 2 divisors, whose sum is σ = 212223233988. Its totient is φ = 212223233986.

The previous prime is 212223233983. The next prime is 212223234089. The reversal of 212223233987 is 789332322212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212223233987 - 2² = 212223233983 is a prime.

It is not a weakly prime, because it can be changed into another prime (212223233983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111616993 + 106111616994.

It is an arithmetic number, because the mean of its divisors is an integer number (106111616994).

Almost surely, 2^212223233987 is an apocalyptic number.

212223233987 is a deficient number, since it is larger than the sum of its proper divisors (1).

212223233987 is an equidigital number, since it uses as much as digits as its factorization.

212223233987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The spelling of 212223233987 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred thirty-three thousand, nine hundred eighty-seven".