222222120221210 has 8 divisors (see below), whose sum is σ = 399999816398196. Its totient is φ = 88888848088480.

The previous prime is 222222120221197. The next prime is 222222120221239. The reversal of 222222120221210 is 12122021222222.

It can be written as a sum of positive squares in 2 ways, for example, as 219368179632889 + 2853940588321 = 14811083^2 + 1689361^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11111106011051 + ... + 11111106011070.

Almost surely, 2^{222222120221210} is an apocalyptic number.

222222120221210 is a deficient number, since it is larger than the sum of its proper divisors (177777696176986).

222222120221210 is a wasteful number, since it uses less digits than its factorization.

222222120221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222212022128.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 222222120221210 its reverse (12122021222222), we get a palindrome (234344141443432).

The spelling of 222222120221210 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred ten".