10212021218 has 8 divisors (see below), whose sum is σ = 17506322112. Its totient is φ = 4376580516.

The previous prime is 10212021217. The next prime is 10212021223. The reversal of 10212021218 is 81212021201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 10212021218.

It is not an unprimeable number, because it can be changed into a prime (10212021217) 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, 364715030 + ... + 364715057.

It is an arithmetic number, because the mean of its divisors is an integer number (2188290264).

Almost surely, 2^10212021218 is an apocalyptic number.

10212021218 is a deficient number, since it is larger than the sum of its proper divisors (7294300894).

10212021218 is an equidigital number, since it uses as much as digits as its factorization.

10212021218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729430096.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 10212021218 its reverse (81212021201), we get a palindrome (91424042419).

The spelling of 10212021218 in words is "ten billion, two hundred twelve million, twenty-one thousand, two hundred eighteen".