10121100212 has 18 divisors (see below), whose sum is σ = 18815092422. Its totient is φ = 4762870144.

The previous prime is 10121100191. The next prime is 10121100221. The reversal of 10121100212 is 21200112101.

It can be written as a sum of positive squares in 3 ways, for example, as 5347119376 + 4773980836 = 73124^2 + 69094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10121100193 and 10121100202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4376483 + ... + 4378794.

Almost surely, 2^10121100212 is an apocalyptic number.

It is an amenable number.

10121100212 is a deficient number, since it is larger than the sum of its proper divisors (8693992210).

10121100212 is a wasteful number, since it uses less digits than its factorization.

10121100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8755315 (or 8755296 counting only the distinct ones).

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

Adding to 10121100212 its reverse (21200112101), we get a palindrome (31321212313).

The spelling of 10121100212 in words is "ten billion, one hundred twenty-one million, one hundred thousand, two hundred twelve".