212051233489 has 2 divisors, whose sum is σ = 212051233490. Its totient is φ = 212051233488.

The previous prime is 212051233411. The next prime is 212051233547. The reversal of 212051233489 is 984332150212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177814022400 + 34237211089 = 421680^2 + 185033^2 .

It is a cyclic number.

It is not a de Polignac number, because 212051233489 - 2⁹ = 212051232977 is a prime.

It is a super-2 number, since 2×212051233489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212051233189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106025616744 + 106025616745.

It is an arithmetic number, because the mean of its divisors is an integer number (106025616745).

Almost surely, 2^212051233489 is an apocalyptic number.

It is an amenable number.

212051233489 is a deficient number, since it is larger than the sum of its proper divisors (1).

212051233489 is an equidigital number, since it uses as much as digits as its factorization.

212051233489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 212051233489 in words is "two hundred twelve billion, fifty-one million, two hundred thirty-three thousand, four hundred eighty-nine".