210211212172 has 12 divisors (see below), whose sum is σ = 396167284576. Its totient is φ = 97020559440.

The previous prime is 210211212143. The next prime is 210211212173. The reversal of 210211212172 is 271212112012.

It is a super-3 number, since 3×210211212172³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (210211212173) 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, 2021261604 + ... + 2021261707.

Almost surely, 2^210211212172 is an apocalyptic number.

It is an amenable number.

210211212172 is a deficient number, since it is larger than the sum of its proper divisors (185956072404).

210211212172 is a wasteful number, since it uses less digits than its factorization.

210211212172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042523328 (or 4042523326 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 210211212172 its reverse (271212112012), we get a palindrome (481423324184).

The spelling of 210211212172 in words is "two hundred ten billion, two hundred eleven million, two hundred twelve thousand, one hundred seventy-two".