212020292818 has 4 divisors (see below), whose sum is σ = 318030439230. Its totient is φ = 106010146408.

The previous prime is 212020292753. The next prime is 212020292819. The reversal of 212020292818 is 818292020212.

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

It can be written as a sum of positive squares in only one way, i.e., 124046953209 + 87973339609 = 352203^2 + 296603^2 .

It is a super-2 number, since 2×212020292818² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212020292819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53005073203 + ... + 53005073206.

Almost surely, 2^212020292818 is an apocalyptic number.

212020292818 is a deficient number, since it is larger than the sum of its proper divisors (106010146412).

212020292818 is a wasteful number, since it uses less digits than its factorization.

212020292818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010146411.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 212020292818 in words is "two hundred twelve billion, twenty million, two hundred ninety-two thousand, eight hundred eighteen".