111020220212111 has 12 divisors (see below), whose sum is σ = 129292228678392. Its totient is φ = 95052419533008.

The previous prime is 111020220212087. The next prime is 111020220212113. The reversal of 111020220212111 is 111212022020111.

It is not a de Polignac number, because 111020220212111 - 2¹⁴ = 111020220195727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111020220212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020220212113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1282923200 + ... + 1283009733.

It is an arithmetic number, because the mean of its divisors is an integer number (10774352389866).

Almost surely, 2^{111020220212111} is an apocalyptic number.

111020220212111 is a deficient number, since it is larger than the sum of its proper divisors (18272008466281).

111020220212111 is an equidigital number, since it uses as much as digits as its factorization.

111020220212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565933830 (or 2565933823 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111020220212111 its reverse (111212022020111), we get a palindrome (222232242232222).

The spelling of 111020220212111 in words is "one hundred eleven trillion, twenty billion, two hundred twenty million, two hundred twelve thousand, one hundred eleven".