111122220201 has 32 divisors (see below), whose sum is σ = 151213857408. Its totient is φ = 72566807040.

The previous prime is 111122220191. The next prime is 111122220211. The reversal of 111122220201 is 102022221111.

It is an interprime number because it is at equal distance from previous prime (111122220191) and next prime (111122220211).

It is not a de Polignac number, because 111122220201 - 2¹⁹ = 111121695913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111122220211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55755261 + ... + 55757253.

It is an arithmetic number, because the mean of its divisors is an integer number (4725433044).

Almost surely, 2^111122220201 is an apocalyptic number.

It is an amenable number.

111122220201 is a deficient number, since it is larger than the sum of its proper divisors (40091637207).

111122220201 is a wasteful number, since it uses less digits than its factorization.

111122220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111122220201 its reverse (102022221111), we get a palindrome (213144441312).

The spelling of 111122220201 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, two hundred one".