201301221244021 has 4 divisors (see below), whose sum is σ = 204305717083552. Its totient is φ = 198296725404492.

The previous prime is 201301221244001. The next prime is 201301221244063. The reversal of 201301221244021 is 120442122103102.

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 201301221244021 - 2⁵ = 201301221243989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201301221244001) 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, 1502247919665 + ... + 1502247919798.

It is an arithmetic number, because the mean of its divisors is an integer number (51076429270888).

Almost surely, 2^{201301221244021} is an apocalyptic number.

It is an amenable number.

201301221244021 is a deficient number, since it is larger than the sum of its proper divisors (3004495839531).

201301221244021 is an equidigital number, since it uses as much as digits as its factorization.

201301221244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004495839530.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 201301221244021 its reverse (120442122103102), we get a palindrome (321743343347123).

The spelling of 201301221244021 in words is "two hundred one trillion, three hundred one billion, two hundred twenty-one million, two hundred forty-four thousand, twenty-one".