211404012349 has 2 divisors, whose sum is σ = 211404012350. Its totient is φ = 211404012348.

The previous prime is 211404012293. The next prime is 211404012481. The reversal of 211404012349 is 943210404112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156465340249 + 54938672100 = 395557^2 + 234390^2 .

It is a cyclic number.

It is not a de Polignac number, because 211404012349 - 2¹⁵ = 211403979581 is a prime.

It is a super-2 number, since 2×211404012349² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211404012349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211404016349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105702006174 + 105702006175.

It is an arithmetic number, because the mean of its divisors is an integer number (105702006175).

Almost surely, 2^211404012349 is an apocalyptic number.

It is an amenable number.

211404012349 is a deficient number, since it is larger than the sum of its proper divisors (1).

211404012349 is an equidigital number, since it uses as much as digits as its factorization.

211404012349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 211404012349 in words is "two hundred eleven billion, four hundred four million, twelve thousand, three hundred forty-nine".