1212122210001 has 8 divisors (see below), whose sum is σ = 1617475837824. Its totient is φ = 807425027760.

The previous prime is 1212122209997. The next prime is 1212122210003. The reversal of 1212122210001 is 1000122212121.

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

It is not a de Polignac number, because 1212122210001 - 2² = 1212122209997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212122210003) 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, 164107086 + ... + 164114471.

It is an arithmetic number, because the mean of its divisors is an integer number (202184479728).

Almost surely, 2^{1212122210001} is an apocalyptic number.

It is an amenable number.

1212122210001 is a deficient number, since it is larger than the sum of its proper divisors (405353627823).

1212122210001 is a wasteful number, since it uses less digits than its factorization.

1212122210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328222791.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212122210001 its reverse (1000122212121), we get a palindrome (2212244422122).

The spelling of 1212122210001 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred ten thousand, one".