111212121212202 has 16 divisors (see below), whose sum is σ = 222432397029792. Its totient is φ = 37069347969840.

The previous prime is 111212121212201. The next prime is 111212121212221. The reversal of 111212121212202 is 202212121212111.

It is not an unprimeable number, because it can be changed into a prime (111212121212201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339597924 + ... + 339925247.

It is an arithmetic number, because the mean of its divisors is an integer number (13902024814362).

Almost surely, 2^{111212121212202} is an apocalyptic number.

111212121212202 is an abundant number, since it is smaller than the sum of its proper divisors (111220275817590).

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

111212121212202 is a wasteful number, since it uses less digits than its factorization.

111212121212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679550453.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111212121212202 its reverse (202212121212111), we get a palindrome (313424242424313).

Subtracting 111212121212202 from its reverse (202212121212111), we obtain a palindrome (90999999999909).

The spelling of 111212121212202 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, two hundred two".