2021111222 has 48 divisors (see below), whose sum is σ = 3365413920. Its totient is φ = 909582336.

The previous prime is 2021111207. The next prime is 2021111243. The reversal of 2021111222 is 2221111202.

It is a junction number, because it is equal to n+sod(n) for n = 2021111197 and 2021111206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4603679 + ... + 4604117.

It is an arithmetic number, because the mean of its divisors is an integer number (70112790).

Almost surely, 2^2021111222 is an apocalyptic number.

2021111222 is a deficient number, since it is larger than the sum of its proper divisors (1344302698).

2021111222 is a wasteful number, since it uses less digits than its factorization.

2021111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2021111222 is about 44956.7705913136. The cubic root of 2021111222 is about 1264.3386216053.

Adding to 2021111222 its reverse (2221111202), we get a palindrome (4242222424).

It can be divided in two parts, 202111 and 1222, that multiplied together give a palindrome (246979642).

The spelling of 2021111222 in words is "two billion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".