11111221101202 has 4 divisors (see below), whose sum is σ = 16666831651806. Its totient is φ = 5555610550600.

The previous prime is 11111221101157. The next prime is 11111221101209. The reversal of 11111221101202 is 20210112211111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7555247239761 + 3555973861441 = 2748681^2 + 1885729^2 .

It is not an unprimeable number, because it can be changed into a prime (11111221101209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777805275299 + ... + 2777805275302.

Almost surely, 2^{11111221101202} is an apocalyptic number.

11111221101202 is a deficient number, since it is larger than the sum of its proper divisors (5555610550604).

11111221101202 is an equidigital number, since it uses as much as digits as its factorization.

11111221101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555610550603.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11111221101202 its reverse (20210112211111), we get a palindrome (31321333312313).

The spelling of 11111221101202 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, two hundred two".