12209999949 has 96 divisors (see below), whose sum is σ = 21872148480. Its totient is φ = 6409839744.

The previous prime is 12209999927. The next prime is 12209999953. The reversal of 12209999949 is 94999990221.

It is not a de Polignac number, because 12209999949 - 2⁷ = 12209999821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209999959) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9370032 + ... + 9371334.

It is an arithmetic number, because the mean of its divisors is an integer number (227834880).

Almost surely, 2^12209999949 is an apocalyptic number.

It is an amenable number.

12209999949 is a deficient number, since it is larger than the sum of its proper divisors (9662148531).

12209999949 is a wasteful number, since it uses less digits than its factorization.

12209999949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1588 counting only the distinct ones).

The product of its (nonzero) digits is 8503056, while the sum is 63.

The spelling of 12209999949 in words is "twelve billion, two hundred nine million, nine hundred ninety-nine thousand, nine hundred forty-nine".