12111011212210 has 8 divisors (see below), whose sum is σ = 21799820181996. Its totient is φ = 4844404484880.

The previous prime is 12111011212169. The next prime is 12111011212249. The reversal of 12111011212210 is 1221211011121.

It can be written as a sum of positive squares in 2 ways, for example, as 10749735985041 + 1361275227169 = 3278679^2 + 1166737^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605550560601 + ... + 605550560620.

Almost surely, 2^{12111011212210} is an apocalyptic number.

12111011212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111011212210 is a deficient number, since it is larger than the sum of its proper divisors (9688808969786).

12111011212210 is a wasteful number, since it uses less digits than its factorization.

12111011212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211101121228.

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

Adding to 12111011212210 its reverse (1221211011121), we get a palindrome (13332222223331).

The spelling of 12111011212210 in words is "twelve trillion, one hundred eleven billion, eleven million, two hundred twelve thousand, two hundred ten".