212234226989 has 2 divisors, whose sum is σ = 212234226990. Its totient is φ = 212234226988.

The previous prime is 212234226983. The next prime is 212234227013. The reversal of 212234226989 is 989622432212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181229004100 + 31005222889 = 425710^2 + 176083^2 .

It is a cyclic number.

It is not a de Polignac number, because 212234226989 - 2⁴ = 212234226973 is a prime.

It is a super-2 number, since 2×212234226989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212234226983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106117113494 + 106117113495.

It is an arithmetic number, because the mean of its divisors is an integer number (106117113495).

Almost surely, 2^212234226989 is an apocalyptic number.

It is an amenable number.

212234226989 is a deficient number, since it is larger than the sum of its proper divisors (1).

212234226989 is an equidigital number, since it uses as much as digits as its factorization.

212234226989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The spelling of 212234226989 in words is "two hundred twelve billion, two hundred thirty-four million, two hundred twenty-six thousand, nine hundred eighty-nine".