201123212241 has 64 divisors (see below), whose sum is σ = 322804661760. Its totient is φ = 108968509440.

The previous prime is 201123212221. The next prime is 201123212243. The reversal of 201123212241 is 142212321102.

It is a happy number.

It is not a de Polignac number, because 201123212241 - 2⁵ = 201123212209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (201123212243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32140585 + ... + 32146841.

It is an arithmetic number, because the mean of its divisors is an integer number (5043822840).

Almost surely, 2^201123212241 is an apocalyptic number.

201123212241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201123212241 is a deficient number, since it is larger than the sum of its proper divisors (121681449519).

201123212241 is a wasteful number, since it uses less digits than its factorization.

201123212241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7354.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 201123212241 its reverse (142212321102), we get a palindrome (343335533343).

The spelling of 201123212241 in words is "two hundred one billion, one hundred twenty-three million, two hundred twelve thousand, two hundred forty-one".