212281871378 has 8 divisors (see below), whose sum is σ = 318793499760. Its totient is φ = 106017371460.

The previous prime is 212281871377. The next prime is 212281871471. The reversal of 212281871378 is 873178182212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212281871377) 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, 61779968 + ... + 61783403.

It is an arithmetic number, because the mean of its divisors is an integer number (39849187470).

Almost surely, 2^212281871378 is an apocalyptic number.

212281871378 is a deficient number, since it is larger than the sum of its proper divisors (106511628382).

212281871378 is a wasteful number, since it uses less digits than its factorization.

212281871378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123564232.

The product of its digits is 602112, while the sum is 50.

The spelling of 212281871378 in words is "two hundred twelve billion, two hundred eighty-one million, eight hundred seventy-one thousand, three hundred seventy-eight".