201221221013 has 8 divisors (see below), whose sum is σ = 203191549920. Its totient is φ = 199252554480.

The previous prime is 201221221009. The next prime is 201221221027. The reversal of 201221221013 is 310122122102.

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 201221221013 - 2² = 201221221009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201221220982 and 201221221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221221073) 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, 171623 + ... + 657188.

It is an arithmetic number, because the mean of its divisors is an integer number (25398943740).

Almost surely, 2^201221221013 is an apocalyptic number.

It is an amenable number.

201221221013 is a deficient number, since it is larger than the sum of its proper divisors (1970328907).

201221221013 is a wasteful number, since it uses less digits than its factorization.

201221221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831187.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201221221013 its reverse (310122122102), we get a palindrome (511343343115).

The spelling of 201221221013 in words is "two hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, thirteen".