121012100210 has 8 divisors (see below), whose sum is σ = 217821780396. Its totient is φ = 48404840080.

The previous prime is 121012100173. The next prime is 121012100267. The reversal of 121012100210 is 12001210121.

It can be written as a sum of positive squares in 2 ways, for example, as 120777795961 + 234304249 = 347531^2 + 15307^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121012100191 and 121012100200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6050605001 + ... + 6050605020.

Almost surely, 2^121012100210 is an apocalyptic number.

121012100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121012100210 is a deficient number, since it is larger than the sum of its proper divisors (96809680186).

121012100210 is a wasteful number, since it uses less digits than its factorization.

121012100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12101210028.

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

Adding to 121012100210 its reverse (12001210121), we get a palindrome (133013310331).

The spelling of 121012100210 in words is "one hundred twenty-one billion, twelve million, one hundred thousand, two hundred ten".