212948138249 has 24 divisors (see below), whose sum is σ = 267539905920. Its totient is φ = 165912024960.

The previous prime is 212948138243. The next prime is 212948138257. The reversal of 212948138249 is 942831849212.

It is not a de Polignac number, because 212948138249 - 2²⁴ = 212931361033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212948138249.

It is not an unprimeable number, because it can be changed into a prime (212948138243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10444337 + ... + 10464705.

It is an arithmetic number, because the mean of its divisors is an integer number (11147496080).

Almost surely, 2^212948138249 is an apocalyptic number.

It is an amenable number.

212948138249 is a deficient number, since it is larger than the sum of its proper divisors (54591767671).

212948138249 is a wasteful number, since it uses less digits than its factorization.

212948138249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32741 (or 32730 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The spelling of 212948138249 in words is "two hundred twelve billion, nine hundred forty-eight million, one hundred thirty-eight thousand, two hundred forty-nine".