111220212122 has 8 divisors (see below), whose sum is σ = 169320323136. Its totient is φ = 54780104412.

The previous prime is 111220212121. The next prime is 111220212193. The reversal of 111220212122 is 221212022111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 111220212122.

It is not an unprimeable number, because it can be changed into a prime (111220212121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415000658 + ... + 415000925.

It is an arithmetic number, because the mean of its divisors is an integer number (21165040392).

Almost surely, 2^111220212122 is an apocalyptic number.

111220212122 is a deficient number, since it is larger than the sum of its proper divisors (58100111014).

111220212122 is an equidigital number, since it uses as much as digits as its factorization.

111220212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830001652.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111220212122 its reverse (221212022111), we get a palindrome (332432234233).

The spelling of 111220212122 in words is "one hundred eleven billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty-two".