2100200044 has 12 divisors (see below), whose sum is σ = 3682660464. Its totient is φ = 1048011344.

The previous prime is 2100199987. The next prime is 2100200051. The reversal of 2100200044 is 4400020012.

2100200044 = T₃₁₇ + T₃₁₈ + ... + T₂₃₂₈.

It is a junction number, because it is equal to n+sod(n) for n = 2100199997 and 2100200033.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519907 + ... + 523930.

It is an arithmetic number, because the mean of its divisors is an integer number (306888372).

Almost surely, 2^2100200044 is an apocalyptic number.

It is an amenable number.

2100200044 is a deficient number, since it is larger than the sum of its proper divisors (1582460420).

2100200044 is a wasteful number, since it uses less digits than its factorization.

2100200044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044344 (or 1044342 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2100200044 is about 45827.9395565631. The cubic root of 2100200044 is about 1280.6198259470.

Adding to 2100200044 its reverse (4400020012), we get a palindrome (6500220056).

The spelling of 2100200044 in words is "two billion, one hundred million, two hundred thousand, forty-four".