1210212120001 has 8 divisors (see below), whose sum is σ = 1239113139264. Its totient is φ = 1181345489520.

The previous prime is 1210212119993. The next prime is 1210212120043. The reversal of 1210212120001 is 1000212120121.

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

It is a cyclic number.

It is not a de Polignac number, because 1210212120001 - 2³ = 1210212119993 is a prime.

It is a super-2 number, since 2×1210212120001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210212120071) 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, 8525965 + ... + 8666746.

It is an arithmetic number, because the mean of its divisors is an integer number (154889142408).

Almost surely, 2^{1210212120001} is an apocalyptic number.

It is an amenable number.

1210212120001 is a deficient number, since it is larger than the sum of its proper divisors (28901019263).

1210212120001 is a wasteful number, since it uses less digits than its factorization.

1210212120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17194391.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210212120001 its reverse (1000212120121), we get a palindrome (2210424240122).

The spelling of 1210212120001 in words is "one trillion, two hundred ten billion, two hundred twelve million, one hundred twenty thousand, one".