210212221211011 has 4 divisors (see below), whose sum is σ = 221276022327400. Its totient is φ = 199148420094624.

The previous prime is 210212221210961. The next prime is 210212221211017. The reversal of 210212221211011 is 110112122212012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210212221211011 - 2¹¹ = 210212221208963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 11063801116369 = 210212221211011 / (2 + 1 + 0 + 2 + 1 + 2 + 2 + 2 + 1 + 2 + 1 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210212221211011.

It is not an unprimeable number, because it can be changed into a prime (210212221211017) 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, 5531900558166 + ... + 5531900558203.

It is an arithmetic number, because the mean of its divisors is an integer number (55319005581850).

Almost surely, 2^{210212221211011} is an apocalyptic number.

210212221211011 is a deficient number, since it is larger than the sum of its proper divisors (11063801116389).

210212221211011 is a wasteful number, since it uses less digits than its factorization.

210212221211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11063801116388.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210212221211011 its reverse (110112122212012), we get a palindrome (320324343423023).

The spelling of 210212221211011 in words is "two hundred ten trillion, two hundred twelve billion, two hundred twenty-one million, two hundred eleven thousand, eleven".