211121110012210 has 8 divisors (see below), whose sum is σ = 380017998021996. Its totient is φ = 84448444004880.

The previous prime is 211121110012201. The next prime is 211121110012217. The reversal of 211121110012210 is 12210011121112.

It can be written as a sum of positive squares in 2 ways, for example, as 184684267639881 + 26436842372329 = 13589859^2 + 5141677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (211121110012217) 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, 10556055500601 + ... + 10556055500620.

Almost surely, 2^{211121110012210} is an apocalyptic number.

211121110012210 is a deficient number, since it is larger than the sum of its proper divisors (168896888009786).

211121110012210 is a wasteful number, since it uses less digits than its factorization.

211121110012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21112111001228.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 211121110012210 its reverse (12210011121112), we get a palindrome (223331121133322).

The spelling of 211121110012210 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred ten million, twelve thousand, two hundred ten".