111021210022 has 4 divisors (see below), whose sum is σ = 166531815036. Its totient is φ = 55510605010.

The previous prime is 111021210019. The next prime is 111021210061. The reversal of 111021210022 is 220012120111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111021209984 and 111021210011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755302504 + ... + 27755302507.

It is an arithmetic number, because the mean of its divisors is an integer number (41632953759).

Almost surely, 2^111021210022 is an apocalyptic number.

111021210022 is a deficient number, since it is larger than the sum of its proper divisors (55510605014).

111021210022 is an equidigital number, since it uses as much as digits as its factorization.

111021210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55510605013.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111021210022 its reverse (220012120111), we get a palindrome (331033330133).

The spelling of 111021210022 in words is "one hundred eleven billion, twenty-one million, two hundred ten thousand, twenty-two".