222222211202120 has 32 divisors (see below), whose sum is σ = 500239324351800. Its totient is φ = 88846333521408.

The previous prime is 222222211202099. The next prime is 222222211202141. The reversal of 222222211202120 is 21202112222222.

It is an interprime number because it is at equal distance from previous prime (222222211202099) and next prime (222222211202141).

It can be written as a sum of positive squares in 4 ways, for example, as 149635866665476 + 72586344536644 = 12232574^2 + 8519762^2 .

It is a super-2 number, since 2×222222211202120² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329632879 + ... + 1329799998.

Almost surely, 2^{222222211202120} is an apocalyptic number.

222222211202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222211202120 is an abundant number, since it is smaller than the sum of its proper divisors (278017113149680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222222211202120 is a wasteful number, since it uses less digits than its factorization.

222222211202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659434977 (or 2659434973 counting only the distinct ones).

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

Adding to 222222211202120 its reverse (21202112222222), we get a palindrome (243424323424342).

The spelling of 222222211202120 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred eleven million, two hundred two thousand, one hundred twenty".