201026221 has 8 divisors (see below), whose sum is σ = 219776544. Its totient is φ = 182355120.

The previous prime is 201026219. The next prime is 201026261. The reversal of 201026221 is 122620102.

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 201026221 - 2¹ = 201026219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201026195 and 201026204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201026261) 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, 14430 + ... + 24703.

It is an arithmetic number, because the mean of its divisors is an integer number (27472068).

Almost surely, 2^201026221 is an apocalyptic number.

It is an amenable number.

201026221 is a deficient number, since it is larger than the sum of its proper divisors (18750323).

201026221 is a wasteful number, since it uses less digits than its factorization.

201026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39611.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 201026221 is about 14178.3715919706. The cubic root of 201026221 is about 585.8020712110.

Adding to 201026221 its reverse (122620102), we get a palindrome (323646323).

The spelling of 201026221 in words is "two hundred one million, twenty-six thousand, two hundred twenty-one".