22122202120221 has 16 divisors (see below), whose sum is σ = 33952540428800. Its totient is φ = 12550314048048.

The previous prime is 22122202120219. The next prime is 22122202120283. The reversal of 22122202120221 is 12202120222122.

It is not a de Polignac number, because 22122202120221 - 2¹ = 22122202120219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122202120721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3789343111 + ... + 3789348948.

It is an arithmetic number, because the mean of its divisors is an integer number (2122033776800).

Almost surely, 2^{22122202120221} is an apocalyptic number.

22122202120221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22122202120221 is a deficient number, since it is larger than the sum of its proper divisors (11830338308579).

22122202120221 is a wasteful number, since it uses less digits than its factorization.

22122202120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578692208.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22122202120221 its reverse (12202120222122), we get a palindrome (34324322342343).

The spelling of 22122202120221 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty thousand, two hundred twenty-one".