2021011111222 has 16 divisors (see below), whose sum is σ = 3272401801440. Its totient is φ = 933240512512.

The previous prime is 2021011111213. The next prime is 2021011111237. The reversal of 2021011111222 is 2221111101202.

It is a junction number, because it is equal to n+sod(n) for n = 2021011111196 and 2021011111205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757499083 + ... + 757501750.

It is an arithmetic number, because the mean of its divisors is an integer number (204525112590).

Almost surely, 2^{2021011111222} is an apocalyptic number.

2021011111222 is a deficient number, since it is larger than the sum of its proper divisors (1251390690218).

2021011111222 is a wasteful number, since it uses less digits than its factorization.

2021011111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515000887.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2021011111222 its reverse (2221111101202), we get a palindrome (4242122212424).

The spelling of 2021011111222 in words is "two trillion, twenty-one billion, eleven million, one hundred eleven thousand, two hundred twenty-two".