111221112302010 has 64 divisors (see below), whose sum is σ = 309484834248960. Its totient is φ = 28369443136320.

The previous prime is 111221112301969. The next prime is 111221112302011. The reversal of 111221112302010 is 10203211122111.

It is a happy number.

111221112302010 is a `hidden beast` number, since 1 + 1 + 1 + 221 + 11 + 230 + 201 + 0 = 666.

It is a super-2 number, since 2×111221112302010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111221112302011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8954994781 + ... + 8955007200.

It is an arithmetic number, because the mean of its divisors is an integer number (4835700535140).

Almost surely, 2^{111221112302010} is an apocalyptic number.

111221112302010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111221112302010 is an abundant number, since it is smaller than the sum of its proper divisors (198263721946950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221112302010 is a wasteful number, since it uses less digits than its factorization.

111221112302010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17910002020 (or 17910002014 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111221112302010 its reverse (10203211122111), we get a palindrome (121424323424121).

The spelling of 111221112302010 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twelve million, three hundred two thousand, ten".