1021112222200 has 48 divisors (see below), whose sum is σ = 2713241051280. Its totient is φ = 350095618560.

The previous prime is 1021112222113. The next prime is 1021112222209. The reversal of 1021112222200 is 22222111201.

It is a happy number.

1021112222200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021112222209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364681537 + ... + 364684336.

It is an arithmetic number, because the mean of its divisors is an integer number (56525855235).

Almost surely, 2^{1021112222200} is an apocalyptic number.

1021112222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021112222200 is an abundant number, since it is smaller than the sum of its proper divisors (1692128829080).

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

1021112222200 is a wasteful number, since it uses less digits than its factorization.

1021112222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729365896 (or 729365887 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021112222200 its reverse (22222111201), we get a palindrome (1043334333401).

The spelling of 1021112222200 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, two hundred".