210111211210 has 32 divisors (see below), whose sum is σ = 383455973520. Its totient is φ = 82876981248.

The previous prime is 210111211199. The next prime is 210111211229. The reversal of 210111211210 is 12112111012.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 153594231921 + 56516979289 = 391911^2 + 237733^2 .

It is a super-2 number, since 2×210111211210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4127674 + ... + 4178266.

Almost surely, 2^210111211210 is an apocalyptic number.

210111211210 is a deficient number, since it is larger than the sum of its proper divisors (173344762310).

210111211210 is a wasteful number, since it uses less digits than its factorization.

210111211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56362.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210111211210 its reverse (12112111012), we get a palindrome (222223322222).

The spelling of 210111211210 in words is "two hundred ten billion, one hundred eleven million, two hundred eleven thousand, two hundred ten".