210001121110012 has 12 divisors (see below), whose sum is σ = 367595497720080. Its totient is φ = 104973836047136.

The previous prime is 210001121109977. The next prime is 210001121110013. The reversal of 210001121110012 is 210011121100012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 210001121109974 and 210001121110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001121110013) 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, 6681109288 + ... + 6681140719.

It is an arithmetic number, because the mean of its divisors is an integer number (30632958143340).

Almost surely, 2^{210001121110012} is an apocalyptic number.

It is an amenable number.

210001121110012 is a deficient number, since it is larger than the sum of its proper divisors (157594376610068).

210001121110012 is a wasteful number, since it uses less digits than its factorization.

210001121110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13362253940 (or 13362253938 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210001121110012 its reverse (210011121100012), we get a palindrome (420012242210024).

The spelling of 210001121110012 in words is "two hundred ten trillion, one billion, one hundred twenty-one million, one hundred ten thousand, twelve".