2021120021222 has 16 divisors (see below), whose sum is σ = 3127370458992. Its totient is φ = 979157725920.

The previous prime is 2021120021201. The next prime is 2021120021267. The reversal of 2021120021222 is 2221200211202.

It is a happy number.

It is a super-2 number, since 2×2021120021222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021120021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123622853 + ... + 123639200.

It is an arithmetic number, because the mean of its divisors is an integer number (195460653687).

Almost surely, 2^{2021120021222} is an apocalyptic number.

2021120021222 is a deficient number, since it is larger than the sum of its proper divisors (1106250437770).

2021120021222 is a wasteful number, since it uses less digits than its factorization.

2021120021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247262183.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021120021222 its reverse (2221200211202), we get a palindrome (4242320232424).

The spelling of 2021120021222 in words is "two trillion, twenty-one billion, one hundred twenty million, twenty-one thousand, two hundred twenty-two".