1000121112222 has 16 divisors (see below), whose sum is σ = 2064766167552. Its totient is φ = 322619713560.

The previous prime is 1000121112197. The next prime is 1000121112259. The reversal of 1000121112222 is 2222111210001.

It is a super-2 number, since 2×1000121112222² (a number of 25 digits) contains 22 as substring.

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, 2688497428 + ... + 2688497799.

It is an arithmetic number, because the mean of its divisors is an integer number (129047885472).

Almost surely, 2^{1000121112222} is an apocalyptic number.

1000121112222 is an abundant number, since it is smaller than the sum of its proper divisors (1064645055330).

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

1000121112222 is a wasteful number, since it uses less digits than its factorization.

1000121112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376995263.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1000121112222 its reverse (2222111210001), we get a palindrome (3222232322223).

The spelling of 1000121112222 in words is "one trillion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".