201221233113 has 4 divisors (see below), whose sum is σ = 268294977488. Its totient is φ = 134147488740.

The previous prime is 201221233111. The next prime is 201221233133. The reversal of 201221233113 is 311332122102.

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 not a de Polignac number, because 201221233113 - 2¹ = 201221233111 is a prime.

It is a super-3 number, since 3×201221233113³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201221233113.

It is not an unprimeable number, because it can be changed into a prime (201221233111) 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, 33536872183 + ... + 33536872188.

It is an arithmetic number, because the mean of its divisors is an integer number (67073744372).

Almost surely, 2^201221233113 is an apocalyptic number.

It is an amenable number.

201221233113 is a deficient number, since it is larger than the sum of its proper divisors (67073744375).

201221233113 is an equidigital number, since it uses as much as digits as its factorization.

201221233113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67073744374.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 201221233113 its reverse (311332122102), we get a palindrome (512553355215).

The spelling of 201221233113 in words is "two hundred one billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred thirteen".