211121212222007 has 2 divisors, whose sum is σ = 211121212222008. Its totient is φ = 211121212222006.

The previous prime is 211121212221961. The next prime is 211121212222021. The reversal of 211121212222007 is 700222212121112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211121212222007 - 2¹⁸ = 211121211959863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211121212222087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560606111003 + 105560606111004.

It is an arithmetic number, because the mean of its divisors is an integer number (105560606111004).

Almost surely, 2^{211121212222007} is an apocalyptic number.

211121212222007 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121212222007 is an equidigital number, since it uses as much as digits as its factorization.

211121212222007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 211121212222007 its reverse (700222212121112), we get a palindrome (911343424343119).

The spelling of 211121212222007 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, seven".