22010020001221 has 8 divisors (see below), whose sum is σ = 25413631342400. Its totient is φ = 18671239352448.

The previous prime is 22010020001219. The next prime is 22010020001287. The reversal of 22010020001221 is 12210002001022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22010020001221 - 2¹ = 22010020001219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010000001221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16207672371 + ... + 16207673728.

It is an arithmetic number, because the mean of its divisors is an integer number (3176703917800).

Almost surely, 2^{22010020001221} is an apocalyptic number.

It is an amenable number.

22010020001221 is a deficient number, since it is larger than the sum of its proper divisors (3403611341179).

22010020001221 is an equidigital number, since it uses as much as digits as its factorization.

22010020001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32415346203.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22010020001221 its reverse (12210002001022), we get a palindrome (34220022002243).

The spelling of 22010020001221 in words is "twenty-two trillion, ten billion, twenty million, one thousand, two hundred twenty-one".