1212120100101 has 8 divisors (see below), whose sum is σ = 1616377593600. Its totient is φ = 807971336672.

The previous prime is 1212120100057. The next prime is 1212120100123. The reversal of 1212120100101 is 1010010212121.

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 1212120100101 - 2¹⁰ = 1212120099077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212120100141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27156501 + ... + 27201098.

It is an arithmetic number, because the mean of its divisors is an integer number (202047199200).

Almost surely, 2^{1212120100101} is an apocalyptic number.

It is an amenable number.

1212120100101 is a deficient number, since it is larger than the sum of its proper divisors (404257493499).

1212120100101 is an equidigital number, since it uses as much as digits as its factorization.

1212120100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54365035.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212120100101 its reverse (1010010212121), we get a palindrome (2222130312222).

The spelling of 1212120100101 in words is "one trillion, two hundred twelve billion, one hundred twenty million, one hundred thousand, one hundred one".