1212120200105 has 8 divisors (see below), whose sum is σ = 1465647632064. Its totient is φ = 962293898800.

The previous prime is 1212120200047. The next prime is 1212120200107. The reversal of 1212120200105 is 5010020212121.

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

It is not a de Polignac number, because 1212120200105 - 2²⁶ = 1212053091241 is a prime.

It is a super-2 number, since 2×1212120200105² (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 (1212120200107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925281941 + ... + 925283250.

It is an arithmetic number, because the mean of its divisors is an integer number (183205954008).

Almost surely, 2^{1212120200105} is an apocalyptic number.

It is an amenable number.

1212120200105 is a deficient number, since it is larger than the sum of its proper divisors (253527431959).

1212120200105 is a wasteful number, since it uses less digits than its factorization.

1212120200105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850565327.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1212120200105 its reverse (5010020212121), we get a palindrome (6222140412226).

The spelling of 1212120200105 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred thousand, one hundred five".