210200111001 has 6 divisors (see below), whose sum is σ = 303622382570. Its totient is φ = 140133407328.

The previous prime is 210200110973. The next prime is 210200111047. The reversal of 210200111001 is 100111002012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 205255208601 + 4944902400 = 453051^2 + 70320^2 .

It is not a de Polignac number, because 210200111001 - 2¹⁵ = 210200078233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 23355567889 = 210200111001 / (2 + 1 + 0 + 2 + 0 + 0 + 1 + 1 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210200118001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11677783936 + ... + 11677783953.

Almost surely, 2^210200111001 is an apocalyptic number.

It is an amenable number.

210200111001 is a deficient number, since it is larger than the sum of its proper divisors (93422271569).

210200111001 is a wasteful number, since it uses less digits than its factorization.

210200111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23355567895 (or 23355567892 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210200111001 its reverse (100111002012), we get a palindrome (310311113013).

It can be divided in two parts, 210200 and 111001, that added together give a triangular number (321201 = T₈₀₁).

The spelling of 210200111001 in words is "two hundred ten billion, two hundred million, one hundred eleven thousand, one".