121000100212 has 12 divisors (see below), whose sum is σ = 211756510980. Its totient is φ = 60498239936.

The previous prime is 121000100191. The next prime is 121000100257. The reversal of 121000100212 is 212001000121.

It can be written as a sum of positive squares in 2 ways, for example, as 19624087396 + 101376012816 = 140086^2 + 318396^2 .

It is a congruent number.

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, 296137 + ... + 574192.

It is an arithmetic number, because the mean of its divisors is an integer number (17646375915).

Almost surely, 2^121000100212 is an apocalyptic number.

It is an amenable number.

121000100212 is a deficient number, since it is larger than the sum of its proper divisors (90756410768).

121000100212 is a wasteful number, since it uses less digits than its factorization.

121000100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905090 (or 905088 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121000100212 its reverse (212001000121), we get a palindrome (333001100333).

The spelling of 121000100212 in words is "one hundred twenty-one billion, one hundred thousand, two hundred twelve".