111100202211021 has 16 divisors (see below), whose sum is σ = 156868322145984. Its totient is φ = 69700607311104.

The previous prime is 111100202211007. The next prime is 111100202211043. The reversal of 111100202211021 is 120112202001111.

It is a happy number.

It is not a de Polignac number, because 111100202211021 - 2⁴¹ = 108901178955469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100202211091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145294435 + ... + 146057088.

It is an arithmetic number, because the mean of its divisors is an integer number (9804270134124).

Almost surely, 2^{111100202211021} is an apocalyptic number.

It is an amenable number.

111100202211021 is a deficient number, since it is larger than the sum of its proper divisors (45768119934963).

111100202211021 is a wasteful number, since it uses less digits than its factorization.

111100202211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291359020.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111100202211021 its reverse (120112202001111), we get a palindrome (231212404212132).

The spelling of 111100202211021 in words is "one hundred eleven trillion, one hundred billion, two hundred two million, two hundred eleven thousand, twenty-one".