221312020001 has 8 divisors (see below), whose sum is σ = 226119984384. Its totient is φ = 216508188960.

The previous prime is 221312019991. The next prime is 221312020099. The reversal of 221312020001 is 100020213122.

It is a happy number.

221312020001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221312020001 - 2¹⁴ = 221312003617 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 (221312080001) 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, 924965 + ... + 1139378.

It is an arithmetic number, because the mean of its divisors is an integer number (28264998048).

Almost surely, 2^221312020001 is an apocalyptic number.

It is an amenable number.

221312020001 is a deficient number, since it is larger than the sum of its proper divisors (4807964383).

221312020001 is a wasteful number, since it uses less digits than its factorization.

221312020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066671.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221312020001 its reverse (100020213122), we get a palindrome (321332233123).

The spelling of 221312020001 in words is "two hundred twenty-one billion, three hundred twelve million, twenty thousand, one".