2021011222 has 4 divisors (see below), whose sum is σ = 3031516836. Its totient is φ = 1010505610.

The previous prime is 2021011217. The next prime is 2021011229. The reversal of 2021011222 is 2221101202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221101202 = 2 ⋅1110550601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505252804 + ... + 505252807.

It is an arithmetic number, because the mean of its divisors is an integer number (757879209).

Almost surely, 2^2021011222 is an apocalyptic number.

2021011222 is a deficient number, since it is larger than the sum of its proper divisors (1010505614).

2021011222 is a wasteful number, since it uses less digits than its factorization.

2021011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010505613.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2021011222 is about 44955.6583980259. The cubic root of 2021011222 is about 1264.3177690588.

Adding to 2021011222 its reverse (2221101202), we get a palindrome (4242112424).

The spelling of 2021011222 in words is "two billion, twenty-one million, eleven thousand, two hundred twenty-two".