1212211010001 has 8 divisors (see below), whose sum is σ = 1616333056000. Its totient is φ = 808114818672.

The previous prime is 1212211009957. The next prime is 1212211010027. The reversal of 1212211010001 is 1000101122121.

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

It is not a de Polignac number, because 1212211010001 - 2⁹ = 1212211009489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212211010201) 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 7 ways as a sum of consecutive naturals, for example, 6354001 + ... + 6541998.

It is an arithmetic number, because the mean of its divisors is an integer number (202041632000).

Almost surely, 2^{1212211010001} is an apocalyptic number.

It is an amenable number.

1212211010001 is a deficient number, since it is larger than the sum of its proper divisors (404122045999).

1212211010001 is a wasteful number, since it uses less digits than its factorization.

1212211010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12927335.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212211010001 its reverse (1000101122121), we get a palindrome (2212312132122).

The spelling of 1212211010001 in words is "one trillion, two hundred twelve billion, two hundred eleven million, ten thousand, one".