212245670450 has 54 divisors (see below), whose sum is σ = 434001653757. Its totient is φ = 77167213200.

The previous prime is 212245670437. The next prime is 212245670453. The reversal of 212245670450 is 54076542212.

It can be written as a sum of positive squares in 2 ways, for example, as 208000757041 + 4244913409 = 456071^2 + 65153^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325765.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212245670453) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 35831189 + ... + 35837111.

Almost surely, 2^212245670450 is an apocalyptic number.

212245670450 is an abundant number, since it is smaller than the sum of its proper divisors (221755983307).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212245670450 is an frugal number, since it uses more digits than its factorization.

212245670450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11880 (or 5941 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 212245670450 in words is "two hundred twelve billion, two hundred forty-five million, six hundred seventy thousand, four hundred fifty".