211433401121 has 2 divisors, whose sum is σ = 211433401122. Its totient is φ = 211433401120.

The previous prime is 211433401063. The next prime is 211433401183. The reversal of 211433401121 is 121104334112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158515459600 + 52917941521 = 398140^2 + 230039^2 .

It is a cyclic number.

It is not a de Polignac number, because 211433401121 - 2²² = 211429206817 is a prime.

It is not a weakly prime, because it can be changed into another prime (211433403121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105716700560 + 105716700561.

It is an arithmetic number, because the mean of its divisors is an integer number (105716700561).

Almost surely, 2^211433401121 is an apocalyptic number.

It is an amenable number.

211433401121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211433401121 is an equidigital number, since it uses as much as digits as its factorization.

211433401121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211433401121 its reverse (121104334112), we get a palindrome (332537735233).

The spelling of 211433401121 in words is "two hundred eleven billion, four hundred thirty-three million, four hundred one thousand, one hundred twenty-one".