1212021210001 has 8 divisors (see below), whose sum is σ = 1411302325824. Its totient is φ = 1019273901360.

The previous prime is 1212021209989. The next prime is 1212021210031. The reversal of 1212021210001 is 1000121202121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212021210001 - 2⁹ = 1212021209489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212021210031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633451395 + ... + 1633452136.

It is an arithmetic number, because the mean of its divisors is an integer number (176412790728).

Almost surely, 2^{1212021210001} is an apocalyptic number.

It is an amenable number.

1212021210001 is a deficient number, since it is larger than the sum of its proper divisors (199281115823).

1212021210001 is an equidigital number, since it uses as much as digits as its factorization.

1212021210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266903591.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212021210001 its reverse (1000121202121), we get a palindrome (2212142412122).

The spelling of 1212021210001 in words is "one trillion, two hundred twelve billion, twenty-one million, two hundred ten thousand, one".