1212011100101 has 16 divisors (see below), whose sum is σ = 1276754876928. Its totient is φ = 1148275167600.

The previous prime is 1212011100067. The next prime is 1212011100109. The reversal of 1212011100101 is 1010011102121.

It is a cyclic number.

It is not a de Polignac number, because 1212011100101 - 2³⁰ = 1210937358277 is a prime.

It is a super-3 number, since 3×1212011100101³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212011100109) 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 15 ways as a sum of consecutive naturals, for example, 14752106 + ... + 14834036.

It is an arithmetic number, because the mean of its divisors is an integer number (79797179808).

Almost surely, 2^{1212011100101} is an apocalyptic number.

It is an amenable number.

1212011100101 is a deficient number, since it is larger than the sum of its proper divisors (64743776827).

1212011100101 is a wasteful number, since it uses less digits than its factorization.

1212011100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88072.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1212011100101 its reverse (1010011102121), we get a palindrome (2222022202222).

The spelling of 1212011100101 in words is "one trillion, two hundred twelve billion, eleven million, one hundred thousand, one hundred one".