1212312331101 has 64 divisors (see below), whose sum is σ = 1728127249920. Its totient is φ = 754299786240.

The previous prime is 1212312331079. The next prime is 1212312331103. The reversal of 1212312331101 is 1011332132121.

It is not a de Polignac number, because 1212312331101 - 2¹⁵ = 1212312298333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212312331103) 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 63 ways as a sum of consecutive naturals, for example, 547812871 + ... + 547815083.

It is an arithmetic number, because the mean of its divisors is an integer number (27001988280).

Almost surely, 2^{1212312331101} is an apocalyptic number.

It is an amenable number.

1212312331101 is a deficient number, since it is larger than the sum of its proper divisors (515814918819).

1212312331101 is a wasteful number, since it uses less digits than its factorization.

1212312331101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1212312331101 its reverse (1011332132121), we get a palindrome (2223644463222).

The spelling of 1212312331101 in words is "one trillion, two hundred twelve billion, three hundred twelve million, three hundred thirty-one thousand, one hundred one".