2021221021222 has 32 divisors (see below), whose sum is σ = 3311900928000. Its totient is φ = 919524516768.

The previous prime is 2021221021181. The next prime is 2021221021241. The reversal of 2021221021222 is 2221201221202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021221021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408943 + ... + 2051749.

It is an arithmetic number, because the mean of its divisors is an integer number (103496904000).

Almost surely, 2^{2021221021222} is an apocalyptic number.

2021221021222 is a deficient number, since it is larger than the sum of its proper divisors (1290679906778).

2021221021222 is a wasteful number, since it uses less digits than its factorization.

2021221021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643500.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2021221021222 its reverse (2221201221202), we get a palindrome (4242422242424).

The spelling of 2021221021222 in words is "two trillion, twenty-one billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-two".