1212100101211 has 8 divisors (see below), whose sum is σ = 1275927464000. Its totient is φ = 1148276000520.

The previous prime is 1212100101193. The next prime is 1212100101217. The reversal of 1212100101211 is 1121010012121.

It is a happy number.

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 1212100101211 - 2¹⁹ = 1212099576923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212100101191 and 1212100101200.

It is not an unprimeable number, because it can be changed into a prime (1212100101217) 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, 33585 + ... + 1557346.

It is an arithmetic number, because the mean of its divisors is an integer number (159490933000).

Almost surely, 2^{1212100101211} is an apocalyptic number.

1212100101211 is a deficient number, since it is larger than the sum of its proper divisors (63827362789).

1212100101211 is a wasteful number, since it uses less digits than its factorization.

1212100101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631049.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212100101211 its reverse (1121010012121), we get a palindrome (2333110113332).

The spelling of 1212100101211 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred one thousand, two hundred eleven".