202220121011111 has 4 divisors (see below), whose sum is σ = 231108709726992. Its totient is φ = 173331532295232.

The previous prime is 202220121011101. The next prime is 202220121011113. The reversal of 202220121011111 is 111110121022202.

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

It is a cyclic number.

It is not a de Polignac number, because 202220121011111 - 2⁴² = 197822074500007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202220121011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220121011113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14444294357930 + ... + 14444294357943.

It is an arithmetic number, because the mean of its divisors is an integer number (57777177431748).

Almost surely, 2^{202220121011111} is an apocalyptic number.

202220121011111 is a deficient number, since it is larger than the sum of its proper divisors (28888588715881).

202220121011111 is an equidigital number, since it uses as much as digits as its factorization.

202220121011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28888588715880.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 202220121011111 its reverse (111110121022202), we get a palindrome (313330242033313).

The spelling of 202220121011111 in words is "two hundred two trillion, two hundred twenty billion, one hundred twenty-one million, eleven thousand, one hundred eleven".