211200104 has 8 divisors (see below), whose sum is σ = 396000210. Its totient is φ = 105600048.

The previous prime is 211200103. The next prime is 211200149. The reversal of 211200104 is 401002112.

It can be written as a sum of positive squares in only one way, i.e., 191822500 + 19377604 = 13850^2 + 4402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×211200104² = 89210967859221632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211200103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13199999 + ... + 13200014.

Almost surely, 2^211200104 is an apocalyptic number.

It is an amenable number.

211200104 is a deficient number, since it is larger than the sum of its proper divisors (184800106).

211200104 is a wasteful number, since it uses less digits than its factorization.

211200104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26400019 (or 26400015 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 211200104 is about 14532.7252777998. The cubic root of 211200104 is about 595.5223189314.

Adding to 211200104 its reverse (401002112), we get a palindrome (612202216).

The spelling of 211200104 in words is "two hundred eleven million, two hundred thousand, one hundred four".