1222212122222 has 16 divisors (see below), whose sum is σ = 2256391610592. Its totient is φ = 483512487840.

The previous prime is 1222212122213. The next prime is 1222212122267. The reversal of 1222212122222 is 2222212122221.

It is a super-3 number, since 3×1222212122222³ (a number of 37 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3357725429 + ... + 3357725792.

It is an arithmetic number, because the mean of its divisors is an integer number (141024475662).

Almost surely, 2^{1222212122222} is an apocalyptic number.

1222212122222 is a deficient number, since it is larger than the sum of its proper divisors (1034179488370).

1222212122222 is a wasteful number, since it uses less digits than its factorization.

1222212122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715451243.

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

Adding to 1222212122222 its reverse (2222212122221), we get a palindrome (3444424244443).

Subtracting 1222212122222 from its reverse (2222212122221), we obtain a palindrome (999999999999).

The spelling of 1222212122222 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty-two".