221002020001 has 8 divisors (see below), whose sum is σ = 252615184704. Its totient is φ = 189399217200.

The previous prime is 221002019941. The next prime is 221002020037. The reversal of 221002020001 is 100020200122.

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 221002020001 - 2⁹ = 221002019489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221002020001.

It is not an unprimeable number, because it can be changed into a prime (221000020001) 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, 2544715 + ... + 2630128.

It is an arithmetic number, because the mean of its divisors is an integer number (31576898088).

Almost surely, 2^221002020001 is an apocalyptic number.

It is an amenable number.

221002020001 is a deficient number, since it is larger than the sum of its proper divisors (31613164703).

221002020001 is an equidigital number, since it uses as much as digits as its factorization.

221002020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180951.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 221002020001 its reverse (100020200122), we get a palindrome (321022220123).

The spelling of 221002020001 in words is "two hundred twenty-one billion, two million, twenty thousand, one".