210212001 has 6 divisors (see below), whose sum is σ = 303639570. Its totient is φ = 140141328.

The previous prime is 210211999. The next prime is 210212003. The reversal of 210212001 is 100212012.

It is an interprime number because it is at equal distance from previous prime (210211999) and next prime (210212003).

It can be written as a sum of positive squares in only one way, i.e., 158155776 + 52056225 = 12576^2 + 7215^2 .

It is not a de Polignac number, because 210212001 - 2¹ = 210211999 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: 23356889 = 210212001 / (2 + 1 + 0 + 2 + 1 + 2 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (210212003) 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, 11678436 + ... + 11678453.

It is an arithmetic number, because the mean of its divisors is an integer number (50606595).

Almost surely, 2^210212001 is an apocalyptic number.

It is an amenable number.

210212001 is a deficient number, since it is larger than the sum of its proper divisors (93427569).

210212001 is a wasteful number, since it uses less digits than its factorization.

210212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23356895 (or 23356892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 210212001 is about 14498.6896304459. The cubic root of 210212001 is about 594.5921466405.

Adding to 210212001 its reverse (100212012), we get a palindrome (310424013).

The spelling of 210212001 in words is "two hundred ten million, two hundred twelve thousand, one".