111221652201 has 8 divisors (see below), whose sum is σ = 161776948704. Its totient is φ = 67407061920.

The previous prime is 111221652181. The next prime is 111221652229. The reversal of 111221652201 is 102256122111.

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 111221652201 - 2⁹ = 111221651689 is a prime.

It is a super-4 number, since 4×111221652201⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221652701) 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, 1685176516 + ... + 1685176581.

It is an arithmetic number, because the mean of its divisors is an integer number (20222118588).

Almost surely, 2^111221652201 is an apocalyptic number.

111221652201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111221652201 is a deficient number, since it is larger than the sum of its proper divisors (50555296503).

111221652201 is a wasteful number, since it uses less digits than its factorization.

111221652201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370353111.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 111221652201 its reverse (102256122111), we get a palindrome (213477774312).

The spelling of 111221652201 in words is "one hundred eleven billion, two hundred twenty-one million, six hundred fifty-two thousand, two hundred one".