212488508202305 has 4 divisors (see below), whose sum is σ = 254986209842772. Its totient is φ = 169990806561840.

The previous prime is 212488508202251. The next prime is 212488508202409. The reversal of 212488508202305 is 503202805884212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138843825806401 + 73644682395904 = 11783201^2 + 8581648^2 .

It is not a de Polignac number, because 212488508202305 - 2¹² = 212488508198209 is a prime.

It is a super-2 number, since 2×212488508202305² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21248850820226 + ... + 21248850820235.

It is an arithmetic number, because the mean of its divisors is an integer number (63746552460693).

Almost surely, 2^{212488508202305} is an apocalyptic number.

It is an amenable number.

212488508202305 is a deficient number, since it is larger than the sum of its proper divisors (42497701640467).

212488508202305 is an equidigital number, since it uses as much as digits as its factorization.

212488508202305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42497701640466.

The product of its (nonzero) digits is 2457600, while the sum is 50.

The spelling of 212488508202305 in words is "two hundred twelve trillion, four hundred eighty-eight billion, five hundred eight million, two hundred two thousand, three hundred five".