212265808044 has 12 divisors (see below), whose sum is σ = 495286885464. Its totient is φ = 70755269344.

The previous prime is 212265808043. The next prime is 212265808129. The reversal of 212265808044 is 440808562212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 212265807987 and 212265808005.

It is not an unprimeable number, because it can be changed into a prime (212265808043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8844408657 + ... + 8844408680.

It is an arithmetic number, because the mean of its divisors is an integer number (41273907122).

Almost surely, 2^212265808044 is an apocalyptic number.

It is an amenable number.

212265808044 is an abundant number, since it is smaller than the sum of its proper divisors (283021077420).

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

212265808044 is a wasteful number, since it uses less digits than its factorization.

212265808044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17688817344 (or 17688817342 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The spelling of 212265808044 in words is "two hundred twelve billion, two hundred sixty-five million, eight hundred eight thousand, forty-four".