111012022221 has 16 divisors (see below), whose sum is σ = 151820956800. Its totient is φ = 72124295360.

The previous prime is 111012022217. The next prime is 111012022229. The reversal of 111012022221 is 122220210111.

It is a cyclic number.

It is not a de Polignac number, because 111012022221 - 2² = 111012022217 is a prime.

It is a super-4 number, since 4×111012022221⁴ (a number of 45 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111012022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012022229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2319225 + ... + 2366606.

It is an arithmetic number, because the mean of its divisors is an integer number (9488809800).

Almost surely, 2^111012022221 is an apocalyptic number.

It is an amenable number.

111012022221 is a deficient number, since it is larger than the sum of its proper divisors (40808934579).

111012022221 is a wasteful number, since it uses less digits than its factorization.

111012022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686036.

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

Adding to 111012022221 its reverse (122220210111), we get a palindrome (233232232332).

The spelling of 111012022221 in words is "one hundred eleven billion, twelve million, twenty-two thousand, two hundred twenty-one".