210210001121 has 4 divisors (see below), whose sum is σ = 210222606000. Its totient is φ = 210197396244.

The previous prime is 210210001109. The next prime is 210210001129. The reversal of 210210001121 is 121100012012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210210001121 - 2²⁶ = 210142892257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210210001129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6277391 + ... + 6310788.

It is an arithmetic number, because the mean of its divisors is an integer number (52555651500).

Almost surely, 2^210210001121 is an apocalyptic number.

It is an amenable number.

210210001121 is a deficient number, since it is larger than the sum of its proper divisors (12604879).

210210001121 is a wasteful number, since it uses less digits than its factorization.

210210001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12604878.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210210001121 its reverse (121100012012), we get a palindrome (331310013133).

The spelling of 210210001121 in words is "two hundred ten billion, two hundred ten million, one thousand, one hundred twenty-one".