102101212218 has 16 divisors (see below), whose sum is σ = 204939620640. Its totient is φ = 33910871376.

The previous prime is 102101212217. The next prime is 102101212219. The reversal of 102101212218 is 812212101201.

It is an interprime number because it is at equal distance from previous prime (102101212217) and next prime (102101212219).

It is a junction number, because it is equal to n+sod(n) for n = 102101212194 and 102101212203.

It is not an unprimeable number, because it can be changed into a prime (102101212217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30714708 + ... + 30718031.

It is an arithmetic number, because the mean of its divisors is an integer number (12808726290).

Almost surely, 2^102101212218 is an apocalyptic number.

102101212218 is an abundant number, since it is smaller than the sum of its proper divisors (102838408422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102101212218 is a wasteful number, since it uses less digits than its factorization.

102101212218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61433021.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 102101212218 its reverse (812212101201), we get a palindrome (914313313419).

The spelling of 102101212218 in words is "one hundred two billion, one hundred one million, two hundred twelve thousand, two hundred eighteen".