22021221030321 has 16 divisors (see below), whose sum is σ = 29368556380800. Its totient is φ = 14677350249600.

The previous prime is 22021221030301. The next prime is 22021221030323. The reversal of 22021221030321 is 12303012212022.

It is not a de Polignac number, because 22021221030321 - 2⁶ = 22021221030257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021221030323) 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, 278030701 + ... + 278109893.

It is an arithmetic number, because the mean of its divisors is an integer number (1835534773800).

Almost surely, 2^{22021221030321} is an apocalyptic number.

It is an amenable number.

22021221030321 is a deficient number, since it is larger than the sum of its proper divisors (7347335350479).

22021221030321 is a wasteful number, since it uses less digits than its factorization.

22021221030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99896.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22021221030321 its reverse (12303012212022), we get a palindrome (34324233242343).

The spelling of 22021221030321 in words is "twenty-two trillion, twenty-one billion, two hundred twenty-one million, thirty thousand, three hundred twenty-one".