11111243202 has 20 divisors (see below), whose sum is σ = 24897415686. Its totient is φ = 3703747680.

The previous prime is 11111243201. The next prime is 11111243219. The reversal of 11111243202 is 20234211111.

It can be written as a sum of positive squares in only one way, i.e., 7097894001 + 4013349201 = 84249^2 + 63351^2 .

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 (11111243201) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34293799 + ... + 34294122.

Almost surely, 2^11111243202 is an apocalyptic number.

11111243202 is an abundant number, since it is smaller than the sum of its proper divisors (13786172484).

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

11111243202 is an equidigital number, since it uses as much as digits as its factorization.

11111243202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68587935 (or 68587926 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11111243202 its reverse (20234211111), we get a palindrome (31345454313).

The spelling of 11111243202 in words is "eleven billion, one hundred eleven million, two hundred forty-three thousand, two hundred two".