102212101021090 has 8 divisors (see below), whose sum is σ = 183981781837980. Its totient is φ = 40884840408432.

The previous prime is 102212101021087. The next prime is 102212101021091. The reversal of 102212101021090 is 90120101212201.

It can be written as a sum of positive squares in 2 ways, for example, as 93532283521681 + 8679817499409 = 9671209^2 + 2946153^2 .

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 (102212101021091) 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, 5110605051045 + ... + 5110605051064.

Almost surely, 2^{102212101021090} is an apocalyptic number.

102212101021090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102212101021090 is a deficient number, since it is larger than the sum of its proper divisors (81769680816890).

102212101021090 is a wasteful number, since it uses less digits than its factorization.

102212101021090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221210102116.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 102212101021090 its reverse (90120101212201), we get a palindrome (192332202233291).

The spelling of 102212101021090 in words is "one hundred two trillion, two hundred twelve billion, one hundred one million, twenty-one thousand, ninety".