102021212018 has 32 divisors (see below), whose sum is σ = 172130441472. Its totient is φ = 44949013200.

The previous prime is 102021212011. The next prime is 102021212021. The reversal of 102021212018 is 810212120201.

It is not an unprimeable number, because it can be changed into a prime (102021212011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287696 + ... + 535547.

It is an arithmetic number, because the mean of its divisors is an integer number (5379076296).

Almost surely, 2^102021212018 is an apocalyptic number.

102021212018 is a deficient number, since it is larger than the sum of its proper divisors (70109229454).

102021212018 is a wasteful number, since it uses less digits than its factorization.

102021212018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823430.

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

Adding to 102021212018 its reverse (810212120201), we get a palindrome (912233332219).

The spelling of 102021212018 in words is "one hundred two billion, twenty-one million, two hundred twelve thousand, eighteen".