212261445622 has 16 divisors (see below), whose sum is σ = 321696001872. Its totient is φ = 105029591040.

The previous prime is 212261445611. The next prime is 212261445631. The reversal of 212261445622 is 226544162212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4071573 + ... + 4123375.

It is an arithmetic number, because the mean of its divisors is an integer number (20106000117).

Almost surely, 2^212261445622 is an apocalyptic number.

212261445622 is a deficient number, since it is larger than the sum of its proper divisors (109434556250).

212261445622 is a wasteful number, since it uses less digits than its factorization.

212261445622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73023.

The product of its digits is 92160, while the sum is 37.

The spelling of 212261445622 in words is "two hundred twelve billion, two hundred sixty-one million, four hundred forty-five thousand, six hundred twenty-two".