222121012210221 has 8 divisors (see below), whose sum is σ = 296161671728160. Its totient is φ = 148080513749552.

The previous prime is 222121012210219. The next prime is 222121012210231. The reversal of 222121012210221 is 122012210121222.

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 222121012210221 - 2¹ = 222121012210219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121012210231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37008711 + ... + 42589748.

It is an arithmetic number, because the mean of its divisors is an integer number (37020208966020).

Almost surely, 2^{222121012210221} is an apocalyptic number.

It is an amenable number.

222121012210221 is a deficient number, since it is larger than the sum of its proper divisors (74040659517939).

222121012210221 is an equidigital number, since it uses as much as digits as its factorization.

222121012210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80528635.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222121012210221 its reverse (122012210121222), we get a palindrome (344133222331443).

The spelling of 222121012210221 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twelve million, two hundred ten thousand, two hundred twenty-one".