212446389122 has 18 divisors (see below), whose sum is σ = 350285001129. Its totient is φ = 96563281320.

The previous prime is 212446389101. The next prime is 212446389173. The reversal of 212446389122 is 221983644212.

It can be written as a sum of positive squares in 2 ways, for example, as 168806761321 + 43639627801 = 410861^2 + 208901^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325919.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7155404 + ... + 7185032.

Almost surely, 2^212446389122 is an apocalyptic number.

212446389122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212446389122 is a deficient number, since it is larger than the sum of its proper divisors (137838612007).

212446389122 is an frugal number, since it uses more digits than its factorization.

212446389122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59282 (or 29642 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The spelling of 212446389122 in words is "two hundred twelve billion, four hundred forty-six million, three hundred eighty-nine thousand, one hundred twenty-two".