111211212201 has 8 divisors (see below), whose sum is σ = 149363964384. Its totient is φ = 73599634080.

The previous prime is 111211212191. The next prime is 111211212241. The reversal of 111211212201 is 102212112111.

It is a happy number.

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

It is not a de Polignac number, because 111211212201 - 2¹³ = 111211204009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111211212241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135293035 + ... + 135293856.

It is an arithmetic number, because the mean of its divisors is an integer number (18670495548).

Almost surely, 2^111211212201 is an apocalyptic number.

It is an amenable number.

111211212201 is a deficient number, since it is larger than the sum of its proper divisors (38152752183).

111211212201 is a wasteful number, since it uses less digits than its factorization.

111211212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270587031.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111211212201 its reverse (102212112111), we get a palindrome (213423324312).

The spelling of 111211212201 in words is "one hundred eleven billion, two hundred eleven million, two hundred twelve thousand, two hundred one".