1200100022 has 24 divisors (see below), whose sum is σ = 1980955200. Its totient is φ = 544872240.

The previous prime is 1200100019. The next prime is 1200100043. The reversal of 1200100022 is 2200010021.

It is a junction number, because it is equal to n+sod(n) for n = 1200099982 and 1200100009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256379 + ... + 261017.

It is an arithmetic number, because the mean of its divisors is an integer number (82539800).

Almost surely, 2^1200100022 is an apocalyptic number.

1200100022 is a deficient number, since it is larger than the sum of its proper divisors (780855178).

1200100022 is a wasteful number, since it uses less digits than its factorization.

1200100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732 (or 5721 counting only the distinct ones).

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

The square root of 1200100022 is about 34642.4598145109. The cubic root of 1200100022 is about 1062.6880931499.

Adding to 1200100022 its reverse (2200010021), we get a palindrome (3400110043).

Subtracting 1200100022 from its reverse (2200010021), we obtain a palindrome (999909999).

The spelling of 1200100022 in words is "one billion, two hundred million, one hundred thousand, twenty-two".