111021022221022 has 4 divisors (see below), whose sum is σ = 166531533331536. Its totient is φ = 55510511110510.

The previous prime is 111021022220987. The next prime is 111021022221077. The reversal of 111021022221022 is 220122220120111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755255555254 + ... + 27755255555257.

It is an arithmetic number, because the mean of its divisors is an integer number (41632883332884).

Almost surely, 2^{111021022221022} is an apocalyptic number.

111021022221022 is a deficient number, since it is larger than the sum of its proper divisors (55510511110514).

111021022221022 is an equidigital number, since it uses as much as digits as its factorization.

111021022221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55510511110513.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111021022221022 its reverse (220122220120111), we get a palindrome (331143242341133).

The spelling of 111021022221022 in words is "one hundred eleven trillion, twenty-one billion, twenty-two million, two hundred twenty-one thousand, twenty-two".