22102020003221 has 4 divisors (see below), whose sum is σ = 22102039301100. Its totient is φ = 22102000705344.

The previous prime is 22102020003209. The next prime is 22102020003233. The reversal of 22102020003221 is 12230002020122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22102020003209) and next prime (22102020003233).

It can be written as a sum of positive squares in 2 ways, for example, as 21070808187025 + 1031211816196 = 4590295^2 + 1015486^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102020003221 - 2¹⁸ = 22102019741077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22102020003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102020003521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7814756 + ... + 10260333.

It is an arithmetic number, because the mean of its divisors is an integer number (5525509825275).

Almost surely, 2^{22102020003221} is an apocalyptic number.

It is an amenable number.

22102020003221 is a deficient number, since it is larger than the sum of its proper divisors (19297879).

22102020003221 is a wasteful number, since it uses less digits than its factorization.

22102020003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19297878.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22102020003221 its reverse (12230002020122), we get a palindrome (34332022023343).

The spelling of 22102020003221 in words is "twenty-two trillion, one hundred two billion, twenty million, three thousand, two hundred twenty-one".