1210200212121 has 8 divisors (see below), whose sum is σ = 1683756816960. Its totient is φ = 771721874352.

The previous prime is 1210200212087. The next prime is 1210200212129. The reversal of 1210200212121 is 1212120020121.

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

It is not a de Polignac number, because 1210200212121 - 2¹¹ = 1210200210073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210200212121.

It is not an unprimeable number, because it can be changed into a prime (1210200212129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8769566686 + ... + 8769566823.

It is an arithmetic number, because the mean of its divisors is an integer number (210469602120).

Almost surely, 2^{1210200212121} is an apocalyptic number.

It is an amenable number.

1210200212121 is a deficient number, since it is larger than the sum of its proper divisors (473556604839).

1210200212121 is a wasteful number, since it uses less digits than its factorization.

1210200212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17539133535.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1210200212121 its reverse (1212120020121), we get a palindrome (2422320232242).

The spelling of 1210200212121 in words is "one trillion, two hundred ten billion, two hundred million, two hundred twelve thousand, one hundred twenty-one".