200221020021001 has 4 divisors (see below), whose sum is σ = 228824022881152. Its totient is φ = 171618017160852.

The previous prime is 200221020020981. The next prime is 200221020021053. The reversal of 200221020021001 is 100120020122002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200221020021001 - 2¹⁹ = 200221019496713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200221020081001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14301501430065 + ... + 14301501430078.

It is an arithmetic number, because the mean of its divisors is an integer number (57206005720288).

Almost surely, 2^{200221020021001} is an apocalyptic number.

It is an amenable number.

200221020021001 is a deficient number, since it is larger than the sum of its proper divisors (28603002860151).

200221020021001 is an equidigital number, since it uses as much as digits as its factorization.

200221020021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28603002860150.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200221020021001 its reverse (100120020122002), we get a palindrome (300341040143003).

The spelling of 200221020021001 in words is "two hundred trillion, two hundred twenty-one billion, twenty million, twenty-one thousand, one".