234211219987 has 2 divisors, whose sum is σ = 234211219988. Its totient is φ = 234211219986.

The previous prime is 234211219873. The next prime is 234211219997. The reversal of 234211219987 is 789912112432.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234211219987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234211219987.

It is not a weakly prime, because it can be changed into another prime (234211219997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117105609993 + 117105609994.

It is an arithmetic number, because the mean of its divisors is an integer number (117105609994).

Almost surely, 2^234211219987 is an apocalyptic number.

234211219987 is a deficient number, since it is larger than the sum of its proper divisors (1).

234211219987 is an equidigital number, since it uses as much as digits as its factorization.

234211219987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The spelling of 234211219987 in words is "two hundred thirty-four billion, two hundred eleven million, two hundred nineteen thousand, nine hundred eighty-seven".