111221000122 has 8 divisors (see below), whose sum is σ = 166853142036. Its totient is φ = 55603286112.

The previous prime is 111221000083. The next prime is 111221000147. The reversal of 111221000122 is 221000122111.

It can be written as a sum of positive squares in 2 ways, for example, as 97769407761 + 13451592361 = 312681^2 + 115981^2 .

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

It is a super-2 number, since 2×111221000122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3587683 + ... + 3618550.

Almost surely, 2^111221000122 is an apocalyptic number.

111221000122 is a deficient number, since it is larger than the sum of its proper divisors (55632141914).

111221000122 is an equidigital number, since it uses as much as digits as its factorization.

111221000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213952.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111221000122 its reverse (221000122111), we get a palindrome (332221122233).

It can be divided in two parts, 111 and 221000122, that multiplied together give a palindrome (24531013542).

The spelling of 111221000122 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twenty-two", and thus it is an aban number.