211121320112203 has 2 divisors, whose sum is σ = 211121320112204. Its totient is φ = 211121320112202.

The previous prime is 211121320112167. The next prime is 211121320112231. The reversal of 211121320112203 is 302211023121112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211121320112203 - 2¹³ = 211121320104011 is a prime.

It is not a weakly prime, because it can be changed into another prime (211121320112273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560660056101 + 105560660056102.

It is an arithmetic number, because the mean of its divisors is an integer number (105560660056102).

Almost surely, 2^{211121320112203} is an apocalyptic number.

211121320112203 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121320112203 is an equidigital number, since it uses as much as digits as its factorization.

211121320112203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 211121320112203 its reverse (302211023121112), we get a palindrome (513332343233315).

The spelling of 211121320112203 in words is "two hundred eleven trillion, one hundred twenty-one billion, three hundred twenty million, one hundred twelve thousand, two hundred three".