1000000222100 has 72 divisors (see below), whose sum is σ = 2368330771296. Its totient is φ = 363474000000.

The previous prime is 1000000222097. The next prime is 1000000222129. The reversal of 1000000222100 is 12220000001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2274170 + ... + 2678030.

Almost surely, 2^{1000000222100} is an apocalyptic number.

1000000222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000000222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1184165385648).

1000000222100 is an abundant number, since it is smaller than the sum of its proper divisors (1368330549196).

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

1000000222100 is a wasteful number, since it uses less digits than its factorization.

1000000222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406137 (or 406130 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 1000000222100 its reverse (12220000001), we get a palindrome (1012220222101).

The spelling of 1000000222100 in words is "one trillion, two hundred twenty-two thousand, one hundred".