201220015 has 8 divisors (see below), whose sum is σ = 241648128. Its totient is φ = 160853280.

The previous prime is 201219917. The next prime is 201220043. The reversal of 201220015 is 510022102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-201220015 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201219977 and 201220004.

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, 7791 + ... + 21520.

It is an arithmetic number, because the mean of its divisors is an integer number (30206016).

Almost surely, 2^201220015 is an apocalyptic number.

201220015 is a deficient number, since it is larger than the sum of its proper divisors (40428113).

201220015 is a wasteful number, since it uses less digits than its factorization.

201220015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30689.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 201220015 is about 14185.2040873581. The cubic root of 201220015 is about 585.9902530732.

Adding to 201220015 its reverse (510022102), we get a palindrome (711242117).

The spelling of 201220015 in words is "two hundred one million, two hundred twenty thousand, fifteen".