1208213712349 has 12 divisors (see below), whose sum is σ = 1406289852828. Its totient is φ = 1035009931200.

The previous prime is 1208213712347. The next prime is 1208213712401. The reversal of 1208213712349 is 9432173128021.

It can be written as a sum of positive squares in 2 ways, for example, as 1117633781124 + 90579931225 = 1057182^2 + 300965^2 .

It is not a de Polignac number, because 1208213712349 - 2¹ = 1208213712347 is a prime.

It is a super-3 number, since 3×1208213712349³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208213712341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7079362 + ... + 7248019.

It is an arithmetic number, because the mean of its divisors is an integer number (117190821069).

Almost surely, 2^{1208213712349} is an apocalyptic number.

It is an amenable number.

1208213712349 is a deficient number, since it is larger than the sum of its proper divisors (198076140479).

1208213712349 is a wasteful number, since it uses less digits than its factorization.

1208213712349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14329116 (or 14329109 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 1208213712349 in words is "one trillion, two hundred eight billion, two hundred thirteen million, seven hundred twelve thousand, three hundred forty-nine".