100212121010 has 8 divisors (see below), whose sum is σ = 180381817836. Its totient is φ = 40084848400.

The previous prime is 100212121007. The next prime is 100212121057. The reversal of 100212121010 is 10121212001.

It can be written as a sum of positive squares in 2 ways, for example, as 99361757089 + 850363921 = 315217^2 + 29161^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 100212120982 and 100212121000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5010606041 + ... + 5010606060.

Almost surely, 2^100212121010 is an apocalyptic number.

100212121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100212121010 is a deficient number, since it is larger than the sum of its proper divisors (80169696826).

100212121010 is a wasteful number, since it uses less digits than its factorization.

100212121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021212108.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100212121010 its reverse (10121212001), we get a palindrome (110333333011).

Subtracting from 100212121010 its reverse (10121212001), we obtain a palindrome (90090909009).

The spelling of 100212121010 in words is "one hundred billion, two hundred twelve million, one hundred twenty-one thousand, ten".