1212312102001 has 24 divisors (see below), whose sum is σ = 1640050970432. Its totient is φ = 871992712800.

The previous prime is 1212312101999. The next prime is 1212312102007. The reversal of 1212312102001 is 1002012132121.

It is not a de Polignac number, because 1212312102001 - 2¹ = 1212312101999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212312102007) 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 23 ways as a sum of consecutive naturals, for example, 55039035 + ... + 55061056.

Almost surely, 2^{1212312102001} is an apocalyptic number.

1212312102001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212312102001 is a deficient number, since it is larger than the sum of its proper divisors (427738868431).

1212312102001 is a wasteful number, since it uses less digits than its factorization.

1212312102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110100133 (or 110100122 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1212312102001 its reverse (1002012132121), we get a palindrome (2214324234122).

The spelling of 1212312102001 in words is "one trillion, two hundred twelve billion, three hundred twelve million, one hundred two thousand, one".