111211202121202 has 16 divisors (see below), whose sum is σ = 172201927751424. Its totient is φ = 53810641566000.

The previous prime is 111211202121197. The next prime is 111211202121289. The reversal of 111211202121202 is 202121202112111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111211202121202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17770824 + ... + 23199667.

It is an arithmetic number, because the mean of its divisors is an integer number (10762620484464).

Almost surely, 2^{111211202121202} is an apocalyptic number.

111211202121202 is a deficient number, since it is larger than the sum of its proper divisors (60990725630222).

111211202121202 is a wasteful number, since it uses less digits than its factorization.

111211202121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41014305.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111211202121202 its reverse (202121202112111), we get a palindrome (313332404233313).

Subtracting 111211202121202 from its reverse (202121202112111), we obtain a palindrome (90909999990909).

The spelling of 111211202121202 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, one hundred twenty-one thousand, two hundred two".