2012021221001 has 8 divisors (see below), whose sum is σ = 2204517100800. Its totient is φ = 1821122817840.

The previous prime is 2012021220971. The next prime is 2012021221019. The reversal of 2012021221001 is 1001221202102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012021221001 is a prime.

It is a super-4 number, since 4×2012021221001⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012021221031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399366521 + ... + 399371558.

It is an arithmetic number, because the mean of its divisors is an integer number (275564637600).

Almost surely, 2^{2012021221001} is an apocalyptic number.

It is an amenable number.

2012021221001 is a deficient number, since it is larger than the sum of its proper divisors (192495879799).

2012021221001 is a wasteful number, since it uses less digits than its factorization.

2012021221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798738319.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2012021221001 its reverse (1001221202102), we get a palindrome (3013242423103).

It can be divided in two parts, 201 and 2021221001, that added together give a palindrome (2021221202).

The spelling of 2012021221001 in words is "two trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, one".