222222010210221 has 8 divisors (see below), whose sum is σ = 338624015558464. Its totient is φ = 126984005834400.

The previous prime is 222222010210159. The next prime is 222222010210267. The reversal of 222222010210221 is 122012010222222.

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

It is not a de Polignac number, because 222222010210221 - 2⁷ = 222222010210093 is a prime.

It is a super-2 number, since 2×222222010210221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10582000486201 = 222222010210221 / (2 + 2 + 2 + 2 + 2 + 2 + 0 + 1 + 0 + 2 + 1 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222010210121) 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, 5291000243080 + ... + 5291000243121.

It is an arithmetic number, because the mean of its divisors is an integer number (42328001944808).

Almost surely, 2^{222222010210221} is an apocalyptic number.

222222010210221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222222010210221 is a deficient number, since it is larger than the sum of its proper divisors (116402005348243).

222222010210221 is a wasteful number, since it uses less digits than its factorization.

222222010210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10582000486211.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222222010210221 its reverse (122012010222222), we get a palindrome (344234020432443).

The spelling of 222222010210221 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, ten million, two hundred ten thousand, two hundred twenty-one".