111221000022212 has 12 divisors (see below), whose sum is σ = 194643039206700. Its totient is φ = 55608703106016.

The previous prime is 111221000022211. The next prime is 111221000022227. The reversal of 111221000022212 is 212220000122111.

It can be written as a sum of positive squares in 2 ways, for example, as 106183462175296 + 5037537846916 = 10304536^2 + 2244446^2 .

It is a super-2 number, since 2×111221000022212² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221000022211) 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, 449087003 + ... + 449334594.

It is an arithmetic number, because the mean of its divisors is an integer number (16220253267225).

Almost surely, 2^{111221000022212} is an apocalyptic number.

It is an amenable number.

111221000022212 is a deficient number, since it is larger than the sum of its proper divisors (83422039184488).

111221000022212 is a wasteful number, since it uses less digits than its factorization.

111221000022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898452550 (or 898452548 counting only the distinct ones).

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

Adding to 111221000022212 its reverse (212220000122111), we get a palindrome (323441000144323).

The spelling of 111221000022212 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty-two thousand, two hundred twelve".