122221222210 has 8 divisors (see below), whose sum is σ = 219998199996. Its totient is φ = 48888488880.

The previous prime is 122221222183. The next prime is 122221222219. The reversal of 122221222210 is 12222122221.

It can be written as a sum of positive squares in 2 ways, for example, as 114879645721 + 7341576489 = 338939^2 + 85683^2 .

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

It is not an unprimeable number, because it can be changed into a prime (122221222219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6111061101 + ... + 6111061120.

Almost surely, 2^122221222210 is an apocalyptic number.

122221222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122221222210 is a deficient number, since it is larger than the sum of its proper divisors (97776977786).

122221222210 is a wasteful number, since it uses less digits than its factorization.

122221222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12222122228.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122221222210 its reverse (12222122221), we get a palindrome (134443344431).

The spelling of 122221222210 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred ten".