21222130433401 has 8 divisors (see below), whose sum is σ = 21455880453504. Its totient is φ = 20988843745200.

The previous prime is 21222130433377. The next prime is 21222130433419. The reversal of 21222130433401 is 10433403122212.

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 21222130433401 - 2³⁹ = 20672374619513 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 21222130433401.

It is not an unprimeable number, because it can be changed into a prime (21222130433501) 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, 115740865 + ... + 115924078.

It is an arithmetic number, because the mean of its divisors is an integer number (2681985056688).

Almost surely, 2^{21222130433401} is an apocalyptic number.

It is an amenable number.

21222130433401 is a deficient number, since it is larger than the sum of its proper divisors (233750020103).

21222130433401 is a wasteful number, since it uses less digits than its factorization.

21222130433401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231665951.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21222130433401 its reverse (10433403122212), we get a palindrome (31655533555613).

The spelling of 21222130433401 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred thirty million, four hundred thirty-three thousand, four hundred one".