201220551205 has 8 divisors (see below), whose sum is σ = 241512763392. Its totient is φ = 160944373008.

The previous prime is 201220551199. The next prime is 201220551223. The reversal of 201220551205 is 502155022102.

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 201220551205 - 2⁵ = 201220551173 is a prime.

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 201220551205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3980869 + ... + 4031098.

It is an arithmetic number, because the mean of its divisors is an integer number (30189095424).

Almost surely, 2^201220551205 is an apocalyptic number.

It is an amenable number.

201220551205 is a deficient number, since it is larger than the sum of its proper divisors (40292212187).

201220551205 is an equidigital number, since it uses as much as digits as its factorization.

201220551205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8016995.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 201220551205 its reverse (502155022102), we get a palindrome (703375573307).

The spelling of 201220551205 in words is "two hundred one billion, two hundred twenty million, five hundred fifty-one thousand, two hundred five".