201023202221021 has 8 divisors (see below), whose sum is σ = 201698373432864. Its totient is φ = 200348163298800.

The previous prime is 201023202220933. The next prime is 201023202221029. The reversal of 201023202221021 is 120122202320102.

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 201023202221021 - 2¹⁸ = 201023201958877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201023202220984 and 201023202221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201023202221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30027695 + ... + 36106908.

It is an arithmetic number, because the mean of its divisors is an integer number (25212296679108).

Almost surely, 2^{201023202221021} is an apocalyptic number.

It is an amenable number.

201023202221021 is a deficient number, since it is larger than the sum of its proper divisors (675171211843).

201023202221021 is an equidigital number, since it uses as much as digits as its factorization.

201023202221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66144811.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201023202221021 its reverse (120122202320102), we get a palindrome (321145404541123).

The spelling of 201023202221021 in words is "two hundred one trillion, twenty-three billion, two hundred two million, two hundred twenty-one thousand, twenty-one".