22212021020221 has 32 divisors (see below), whose sum is σ = 22654148041728. Its totient is φ = 21774826736640.

The previous prime is 22212021020219. The next prime is 22212021020227. The reversal of 22212021020221 is 12202012021222.

It is not a de Polignac number, because 22212021020221 - 2¹ = 22212021020219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212021020227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10278583381 + ... + 10278585541.

It is an arithmetic number, because the mean of its divisors is an integer number (707942126304).

Almost surely, 2^{22212021020221} is an apocalyptic number.

It is an amenable number.

22212021020221 is a deficient number, since it is larger than the sum of its proper divisors (442127021507).

22212021020221 is a wasteful number, since it uses less digits than its factorization.

22212021020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

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

Adding to 22212021020221 its reverse (12202012021222), we get a palindrome (34414033041443).

It can be divided in two parts, 2221202 and 1020221, that added together give a palindrome (3241423).

The spelling of 22212021020221 in words is "twenty-two trillion, two hundred twelve billion, twenty-one million, twenty thousand, two hundred twenty-one".