111221402202 has 48 divisors (see below), whose sum is σ = 246298092768. Its totient is φ = 36264434400.

The previous prime is 111221402143. The next prime is 111221402203. The reversal of 111221402202 is 202204122111.

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 (111221402203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217648 + ... + 519435.

It is an arithmetic number, because the mean of its divisors is an integer number (5131210266).

Almost surely, 2^111221402202 is an apocalyptic number.

111221402202 is an abundant number, since it is smaller than the sum of its proper divisors (135076690566).

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

111221402202 is a wasteful number, since it uses less digits than its factorization.

111221402202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737275 (or 737272 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111221402202 its reverse (202204122111), we get a palindrome (313425524313).

The spelling of 111221402202 in words is "one hundred eleven billion, two hundred twenty-one million, four hundred two thousand, two hundred two".