201122232215 has 4 divisors (see below), whose sum is σ = 241346678664. Its totient is φ = 160897785768.

The previous prime is 201122232173. The next prime is 201122232229. The reversal of 201122232215 is 512232221102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201122232215 - 2¹² = 201122228119 is a prime.

It is a super-2 number, since 2×201122232215² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20112223217 + ... + 20112223226.

It is an arithmetic number, because the mean of its divisors is an integer number (60336669666).

Almost surely, 2^201122232215 is an apocalyptic number.

201122232215 is a deficient number, since it is larger than the sum of its proper divisors (40224446449).

201122232215 is an equidigital number, since it uses as much as digits as its factorization.

201122232215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40224446448.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 201122232215 its reverse (512232221102), we get a palindrome (713354453317).

The spelling of 201122232215 in words is "two hundred one billion, one hundred twenty-two million, two hundred thirty-two thousand, two hundred fifteen".