211121212211103 has 16 divisors (see below), whose sum is σ = 281542523826816. Its totient is φ = 140723688550560.

The previous prime is 211121212211083. The next prime is 211121212211111. The reversal of 211121212211103 is 301112212121112.

It is not a de Polignac number, because 211121212211103 - 2¹⁴ = 211121212194719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211121212211103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121212215103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921272400 + ... + 1921382282.

It is an arithmetic number, because the mean of its divisors is an integer number (17596407739176).

Almost surely, 2^{211121212211103} is an apocalyptic number.

211121212211103 is a deficient number, since it is larger than the sum of its proper divisors (70421311615713).

211121212211103 is a wasteful number, since it uses less digits than its factorization.

211121212211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212294.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 211121212211103 its reverse (301112212121112), we get a palindrome (512233424332215).

The spelling of 211121212211103 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, one hundred three".